Discussion of xomi redmi note 4x. What about the photomodule?
Xiaomi, building on its success in the Asian market, released updated version phablet Note 4, changing the design and assembly principle of the case towards simplification. The model is available in two versions and is equipped with different processors. Xiaomi Redmi Note 4X 32 GB received a less powerful Snapdragon 625 compared to its older “brother”.
Contents of delivery
The device comes into the hands of the user in a white cardboard package with the 4X logo embossed on the lid. In addition to the phablet itself, the box contains: a plug-in charger, a USB-microUSB cable for charging and connecting to a PC, a key-clip for the combined SIM card tray and external memory. The set is completed with instructions for use and a warranty card.
Appearance and dimensions
The Xiaomi Redmi Note 4X smartphone has received an expanded color gamut. Black and blue colors were added to the already existing gray, gold and silver. The case, to improve radio signal reception, received plastic lining at the top and bottom. The designers removed shiny chamfers along the edges, which had a positive effect on appearance device, giving it rigor.
The front panel is covered with 2.5D glass Gorilla Glass, with oleophobic coating. The power button and volume control rocker are located on the right side. On the left, there is a hybrid tray of SIM cards and external memory. The bottom end is equipped with a microUSB socket for connecting a charger, on the sides of which there are grilles that hide the speaker and microphone. At the top, at the end, there is a second microphone, a standard 3.5 mm stereo headphone jack and an infrared sensor.
Under tempered glass Covering the front panel, there are backlit touch control buttons. It turns on only when the screen is running. At the top there is a speaker, a front camera lens and a combined light-proximity sensor.
On the back panel there is a main camera lens, below it is a two-color LED flash, and even lower is a fingerprint sensor. The camera and fingerprint scanner are recessed into the body.
Due to the smooth rounding of the edges back cover, the device appears slimmer when placed on a hard surface and fits comfortably in your hand. The roughness of the lid creates an anti-slip effect. The controls eliminate accidental pressing, while allowing you to operate the phablet with one hand.
The weight of the device is 175 grams, thickness is 8.4 mm. Dimensions length-width are 15.1x7.6 cm.
Display module
The smartphone screen is represented by an IPS matrix made using OGS technology, without an air gap. The diagonal is 5.5 inches, the screen resolution is 1920x1080, with a pixel density of 400 ppi.
Color calibration is done in warm colors. The brightness margin is sufficient, but in direct sunlight the contrast and color drop somewhat. The viewing angles of the display are large, the picture does not change color even at maximum deviations.
The brightness of the backlight changes automatically, depending on the external lighting. Double tapping on the screen activates the wake function.
Specifications
The phablet is available in two standard configurations. The older one has 4 GB of RAM, 64 GB of internal memory and a Helio MediaTek X20 processor. The youngest received 3 GB of RAM and 32 GB of internal memory and is equipped with a Snapdragon 625 processor. The SoC is manufactured using a 14 nm process technology and has eight Cortex A-53 cores operating at a frequency of 2 GHz. The Adreno 506 GPU is responsible for graphics.
In a synthetic test AnTuTu Benchmark, the 32 GB model scores 61,800 points. According to GeekBanch 4 results, in multi-core mode – 2950 points. Operating experience under real loads shows that this is quite enough for a comfortable mode in games and working with heavy applications.
Combo slot, allows you to use it in dual sim mode or install an SD card with a capacity of up to 128 GB to increase the amount of stored information.
The device is equipped with a non-removable, lithium polymer battery, with a capacity of 4100 mAh. A full charge takes 2.5 hours, 75% is gained within an hour and a half. The energy saving mode has flexible settings, allowing you to set it to turn on on a schedule or when a user-defined percentage of battery discharge is reached. Function fast charging, for this device, Xiaomi does not provide.
Operating time obtained when testing with the same type of load:
- music playback ≈ 70 hours;
- surfing using a mobile network ≈ 14 hours;
- HD video playback ≈ 16.5 hours;
- games with 3D graphics≈ 8.5 hours.
High autonomy achieved through the use of capacious battery and an energy-efficient processor allows you to use Redmi Note 4X without additional charging throughout the day.
Network communications
Note 4X supports basic LTE frequencies, used Russian operators, with the exception of Band 20, and modern VoLTE voice transmission technology. The smartphone has one radio module installed. This means that when one of the SIM cards is in voice mode, the second one is temporarily inactive.
Bluetooth uses specification 4.2, providing communication with peripherals in a power-saving mode Low Energy. The Wi-Fi wireless communication module operates in two frequencies: 2.4 and 5 GHz. All current 802.11 standards are supported. The infrared port provides good interaction with external devices, easily identifying and connecting to them.
For positioning, the smartphone interacts with satellite networks GPS, GLONASS, Beidou.
The NFC chip is not installed in the device, therefore Android Pay won't work.
Cameras and sound
The front camera has a resolution of 5 MP, the focus is fixed. This is enough to transmit high-quality images during a video call and take selfies. The main camera has a 13 MP matrix with phase detection autofocus. There is no dynamic image stabilization mode when shooting photos and videos. IN manual mode shooting, white balance and light sensitivity are adjusted. The aspect ratio for photography can be 3x4 or 16x9. Quality varies according to typical presets and is defined as low, normal and high.
In natural light, photos taken with the Note 4X camera, with correct color rendering, take on a noticeable dark tint. In HDR mode, the picture is evened out in brightness, but loses color.
Video shooting can be done both basic and front cameras in FullHD mode at 30 frames/sec. The maximum resolution for the main camera is 1920x1080. Sound is recorded in stereo format. H.264 and AAC codecs are responsible for data compression. In Time Lapse mode, the audio track is not recorded. The quality of the material obtained during shooting is satisfactory.
The Note 4X speaker produces sound at a good volume and does not extraneous noise. The sound quality is low, both high and high ones drop out. low frequencies. Headphones are not included, but the device has preset sound profiles for different types of headsets. In FM radio mode, the smartphone uses them as an antenna.
operating system
Out of the box, the Note 4X runs on the OS Android Marshmallow, build 6.0.1. Smartphones supplied to Russia receive a version of the MIUI 8 Global shell, with a Russian interface and pre-installed Google services.
In 2017, Redmi Note 4X, according to Xiaomi plans, will receive an updated version of the OS and everyone will be able to use Android 7.0.
Advantages and disadvantages
The smartphone, despite a number of improvements, has retained a number of negative qualities of previous models.
Information about the make, model, and alternative names of the specific device, if available.
Design
Information about the dimensions and weight of the device, presented in different units of measurement. Materials used, colors offered, certificates.
| Width Width information - refers to the horizontal side of the device in its standard orientation during use. | 76 mm (millimeters) 7.6 cm (centimeters) 0.25 ft (feet) 2.99 in (inches) |
| Height Height information - refers to the vertical side of the device in its standard orientation during use. | 151 mm (millimeters) 15.1 cm (centimeters) 0.5 ft (feet) 5.94 in (inches) |
| Thickness Information about the thickness of the device in different units measurements. | 8.45 mm (millimeters) 0.85 cm (centimeters) 0.03 ft (feet) 0.33 in (inches) |
| Weight Information about the weight of the device in different units of measurement. | 165 g (grams) 0.36 lbs 5.82 oz (ounces) |
| Volume The approximate volume of the device, calculated based on the dimensions provided by the manufacturer. Refers to devices with the shape of a rectangular parallelepiped. | 96.97 cm³ (cubic centimeters) 5.89 in³ (cubic inches) |
| Colors Information about the colors in which this device is offered for sale. | Pink Green Champagne Black Silver |
| Materials for making the case Materials used to make the device body. | Aluminium alloy Plastic |
SIM card
The SIM card is used in mobile devices to store data that certifies the authenticity of mobile service subscribers.
Mobile networks
A mobile network is a radio system that allows multiple mobile devices to communicate with each other.
| GSM GSM (Global System for Mobile Communications) is designed to replace the analogue mobile network (1G). For this reason, GSM is often called a 2G mobile network. It is improved by the addition of GPRS (General Packet Radio Services), and later EDGE (Enhanced Data rates for GSM Evolution) technologies. | GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz |
| CDMA CDMA (Code-Division Multiple Access) is a channel access method used in communications in mobile networks. Compared to other 2G and 2.5G standards like GSM and TDMA, it provides higher data transfer speeds and connectivity more consumers at the same time. | CDMA 800 MHz |
| W-CDMA W-CDMA (Wideband Code Division Multiple Access) is an air interface used by 3G mobile networks, and is one of the three main air interfaces of UMTS, along with TD-SCDMA and TD-CDMA. It provides even higher data transfer speeds and the ability to connect more consumers at the same time. | W-CDMA 850 MHz W-CDMA 900 MHz W-CDMA 1900 MHz W-CDMA 2100 MHz |
| TD-SCDMA TD-SCDMA (Time Division Synchronous Code Division Multiple Access) is a 3G mobile network standard. It is also called UTRA/UMTS-TDD LCR. It is designed as an alternative W-CDMA standard in China by the Chinese Academy of Telecommunications Technology, Datang Telecom and Siemens. TD-SCDMA combines TDMA and CDMA. | TD-SCDMA 1880-1920 MHz TD-SCDMA 2010-2025 MHz |
| LTE LTE (Long Term Evolution) is defined as a fourth generation (4G) technology. It is developed by 3GPP based on GSM/EDGE and UMTS/HSPA to increase the capacity and speed of wireless mobile networks. The subsequent technology development is called LTE Advanced. | LTE 850 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) |
Mobile communication technologies and data transfer speeds
Communication between devices on mobile networks is carried out using technologies that provide different data transfer rates.
Operating system
An operating system is a system software that manages and coordinates the operation of hardware components in a device.
SoC (System on Chip)
A system on a chip (SoC) includes all the most important hardware components of a mobile device on one chip.
| SoC (System on Chip) A system on a chip (SoC) integrates various hardware components, such as a processor, graphics processor, memory, peripherals, interfaces, etc., as well as the software necessary for their operation. | Qualcomm Snapdragon 625 MSM8953 |
| Technological process Information about technological process, on which the chip is made. Nanometers measure half the distance between elements in the processor. | 14 nm (nanometers) |
| Processor (CPU) The primary function of a mobile device's processor (CPU) is to interpret and execute instructions contained in software applications. | ARM Cortex-A53 |
| Processor size The size (in bits) of a processor is determined by the size (in bits) of the registers, address buses, and data buses. 64-bit processors have more high performance compared to 32-bit processors, which for their part are more productive than 16-bit processors. | 64 bit |
| Instruction Set Architecture Instructions are commands with which the software sets/controls the operation of the processor. Information about the instruction set (ISA) that the processor can execute. | ARMv8 |
| Number of processor cores The processor core performs program instructions. There are processors with one, two or more cores. Having more cores increases performance by allowing multiple instructions to be executed in parallel. | 8 |
| CPU clock speed The clock speed of a processor describes its speed in terms of cycles per second. It is measured in megahertz (MHz) or gigahertz (GHz). | 2000 MHz (megahertz) |
| Graphics Processing Unit (GPU) Graphics processing unit (GPU) handles calculations for various 2D/3D graphic applications. IN mobile devices ah it is used most often by games, consumer interface, video applications, etc. | Qualcomm Adreno 506 |
| Clock frequency GPU Running speed is the clock speed of the GPU, measured in megahertz (MHz) or gigahertz (GHz). | 650 MHz (megahertz) |
| Volume random access memory(RAM) Random access memory (RAM) is used by the operating system and all installed applications. Data stored in RAM is lost after the device is turned off or restarted. | 3 GB (gigabytes) 4 GB (gigabytes) |
| Type of random access memory (RAM) Information about the type of random access memory (RAM) used by the device. | LPDDR3 |
| Number of RAM channels Information about the number of RAM channels that are integrated into the SoC. More channels mean higher data rates. | Single channel |
| RAM frequency The frequency of RAM determines its operating speed, more specifically, the speed of reading/writing data. | 933 MHz (megahertz) |
Built-in memory
Each mobile device has built-in (non-removable) memory with a fixed capacity.
Memory cards
Memory cards are used in mobile devices to increase the storage capacity for storing data.
Screen
The screen of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.
| Type/technology One of the main characteristics of the screen is the technology by which it is made and on which the quality of the information image directly depends. | IPS |
| Diagonal For mobile devices, screen size is expressed by the length of its diagonal, measured in inches. | 5.5 in (inches) 139.7 mm (millimeters) 13.97 cm (centimeters) |
| Width Approximate screen width | 2.7 in (inches) 68.49 mm (millimeters) 6.85 cm (centimeters) |
| Height Approximate screen height | 4.79 in (inches) 121.76 mm (millimeters) 12.18 cm (centimeters) |
| Aspect Ratio The ratio of the dimensions of the long side of the screen to its short side | 1.778:1 16:9 |
| Permission Screen resolution shows the number of pixels vertically and horizontally on the screen. More a high resolution means sharper detail in the image. | 1080 x 1920 pixels |
| Pixel Density Information about the number of pixels per centimeter or inch of the screen. Higher density allows information to be displayed on the screen with clearer detail. | 401 ppi (pixels per inch) 157 ppcm (pixels per centimeter) |
| Color depth Screen color depth reflects the total number of bits used for color components in one pixel. Information about the maximum number of colors that the screen can display. | 24 bit 16777216 flowers |
| Screen area Approximate percentage of screen area occupied by the screen on the front of the device. | 72.9% (percentage) |
| Other characteristics Information about other screen features and characteristics. | Capacitive Multi-touch Scratch resistance |
| Display manufacturer - Boe / Tianma 2.5D curved glass screen 1000:1 contrast ratio 450 cd/m² 72% NTSC |
Sensors
Different sensors perform different quantitative measurements and convert physical indicators into signals that a mobile device can recognize.
Main camera
The main camera of a mobile device is usually located on the back of the body and is used for taking photos and videos.
| Sensor model | Sony IMX258 Exmor RS |
| Sensor type | CMOS (complementary metal-oxide semiconductor) |
| Sensor size | 4.71 x 3.49 mm (millimeters) 0.23 in (inches) |
| Pixel size | 1.133 µm (micrometers) 0.001133 mm (millimeters) |
| Crop factor | 7.37 |
| ISO (light sensitivity) ISO indicators determine the level of light sensitivity of the photosensor. A lower value means weaker light sensitivity and vice versa - higher values mean higher light sensitivity, i.e. better ability of the sensor to work in low light conditions. | 100 - 1600 |
| Diaphragm | f/2 |
| Focal length | 3.57 mm (millimeters) 26.33 mm (millimeters) *(35 mm / full frame) |
| Flash type The most common types of flashes in mobile device cameras are LED and xenon flashes. LED flashes produce softer light and, unlike brighter xenon flashes, are also used for video shooting. | Double LED |
| Image Resolution One of the main characteristics of mobile device cameras is their resolution, which shows the number of horizontal and vertical pixels in the image. | 4160 x 3120 pixels 12.98 MP (megapixels) |
| Video resolution Information about the maximum supported resolution when shooting video with the device. | 1920 x 1080 pixels 2.07 MP (megapixels) |
Information about the maximum number of frames per second (fps) supported by the device when shooting video at the maximum resolution. Some of the main standard video shooting and playback speeds are 24p, 25p, 30p, 60p. | 30fps (frames per second) |
| Characteristics Information about other software and hardware features related to the main camera and improving its functionality. | Autofocus Continuous shooting Digital zoom Geographical tags Panoramic photography HDR shooting Touch Focus Face recognition White Balance Adjustment ISO Setting Exposure compensation Self-timer Scene Selection Mode |
| Available also with Samsung S5K3L8 (ISOCELL) Phase detection 5-element lens 720p@120fps |
Additional camera
Additional cameras are usually mounted above the device screen and are used mainly for video conversations, gesture recognition, etc.
| Sensor model Information about the manufacturer and model of the photo sensor used in the device's camera. | Samsung S5K5E8 |
| Sensor type Digital cameras use photo sensors to take photographs. The sensor, as well as optics, are one of the main factors in the quality of the camera in a mobile device. | CMOS BSI (backside illumination) |
| Sensor size Information about the dimensions of the photosensor used in the device. Typically cameras with larger sensors and lower pixel densities offer more high quality images despite the lower resolution. | 2.9 x 2.15 mm (millimeters) 0.14 in (inches) |
| Pixel size The smaller pixel size of the photosensor allows more pixels per unit area, thereby increasing resolution. On the other side, smaller size pixel may have a negative impact on image quality at high ISO levels. | 1.119 µm (micrometers) 0.001119 mm (millimeters) |
| Crop factor The crop factor is the ratio between the dimensions of the full-frame sensor (36 x 24 mm, equivalent to a frame of standard 35 mm film) and the dimensions of the device's photosensor. The indicated number represents the ratio of the diagonals of the full-frame sensor (43.3 mm) and the photosensor of a particular device. | 11.99 |
| Diaphragm Aperture (f-number) is the size of the aperture opening that controls the amount of light reaching the photosensor. A lower f-number means the aperture opening is larger. | f/2 |
| Focal length Focal length is the distance in millimeters from the photosensor to the optical center of the lens. The equivalent focal length is also indicated, providing the same field of view with a full frame camera. | 2.64 mm (millimeters) 31.63 mm (millimeters) *(35 mm / full frame) |
| Image Resolution Information about the maximum resolution of the additional camera when shooting. In most cases, the resolution of the secondary camera is lower than that of the main camera. | 2592 x 1944 pixels 5.04 MP (megapixels) |
| Video resolution Information about the maximum supported video resolution additional camera. | 1280 x 720 pixels 0.92 MP (megapixels) |
| Video - frame rate/frames per second. Information about the maximum number of frames per second (fps) supported by the secondary camera when shooting video at the maximum resolution. | 30fps (frames per second) |
| Angle of view - 85° |
Audio
Information about the type of speakers and audio technologies supported by the device.
Radio
The radio of the mobile device is a built-in FM receiver.
Location determination
Information about the navigation and location technologies supported by your device.
WiFi
Wi-Fi is a technology that provides wireless communication for transmitting data over close distances between various devices.
Bluetooth
Bluetooth is a standard for secure wireless data transfer between various devices of different types over short distances.
USB
USB (Universal Serial Bus) is an industry standard that allows different electronic devices to exchange data.
Headphone jack
This is an audio connector, also called an audio jack. The most widely used standard in mobile devices is the 3.5mm headphone jack.
Connecting devices
Information about other important connection technologies supported by your device.
Browser
A web browser is a software application for accessing and viewing information on the Internet.
| Browser Information about some of the main characteristics and standards supported by the device's browser. | HTML HTML5 CSS 3 |
Audio file formats/codecs
Mobile devices support different audio file formats and codecs, which respectively store and encode/decode digital audio data.
Video file formats/codecs
Mobile devices support different video file formats and codecs, which respectively store and encode/decode digital video data.
Battery
Mobile device batteries differ from each other in their capacity and technology. They provide the electrical charge necessary for their functioning.
| Capacity A battery's capacity indicates the maximum charge it can hold, measured in milliamp-hours. | 4100 mAh (milliamp-hours) |
| Type The type of battery is determined by its structure and, more precisely, the chemicals used. Exist different types batteries, with lithium-ion and lithium-ion polymer batteries most often used in mobile devices. | Li-polymer |
| 2G talk time 2G talk time is the period of time during which the battery charge is completely discharged during a continuous conversation on a 2G network. | 18 h (hours) 1080 min (minutes) 0.8 days |
| 2G latency 2G standby time is the period of time during which the battery charge is completely discharged when the device is in stand-by mode and connected to a 2G network. | 264 h (hours) 15840 min (minutes) 11 days |
| 3G talk time 3G talk time is the period of time during which the battery charge is completely discharged during a continuous conversation on a 3G network. | 18 h (hours) 1080 min (minutes) 0.8 days |
| 3G latency 3G standby time is the period of time during which the battery charge is completely discharged when the device is in stand-by mode and connected to a 3G network. | 264 h (hours) 15840 min (minutes) 11 days |
| Adapter output power Power Information electric current(measured in amperes) and electrical voltage (measured in volts) supplied by the charger ( output power). Higher power output ensures faster battery charging. | 5 V (volts) / 2 A (amps) |
| Characteristics Information about some additional characteristics device battery. | Fixed |
| Battery model: BN43 |
Specific Absorption Rate (SAR)
The SAR level refers to the amount of electromagnetic radiation absorbed by the human body while using a mobile device.
| SAR level for head (EU) The SAR level indicates the maximum amount electromagnetic radiation to which the human body is exposed when holding a mobile device next to the ear in a conversation position. In Europe the maximum permissible SAR value for mobile devices is limited to 2 W/kg per 10 grams of human tissue. This standard has been established by CENELEC in accordance with IEC standards, subject to the guidelines of ICNIRP 1998. | 0.724 W/kg (Watt per kilogram) |
| Body SAR level (EU) The SAR level indicates the maximum amount of electromagnetic radiation to which the human body is exposed when holding a mobile device at hip level. The maximum permissible SAR value for mobile devices in Europe is 2 W/kg per 10 grams of human tissue. This standard has been established by the CENELEC Committee in compliance with the ICNIRP 1998 guidelines and IEC standards. | 0.674 W/kg (Watt per kilogram) |
| Head SAR level (US) The SAR level indicates the maximum amount of electromagnetic radiation that the human body is exposed to when holding a mobile device near the ear. The maximum value used in the USA is 1.6 W/kg per 1 gram of human tissue. Mobile devices in the US are regulated by the CTIA, and the FCC conducts tests and sets their SAR values. | 0.85 W/kg (Watt per kilogram) |
| Body SAR level (US) The SAR level indicates the maximum amount of electromagnetic radiation to which the human body is exposed when holding a mobile device at hip level. The highest permissible SAR value in the USA is 1.6 W/kg per 1 gram of human tissue. This value is set by the FCC, and the CTIA monitors mobile devices' compliance with this standard. | 0.69 W/kg (Watt per kilogram) |
Xiaomi Redmi Note 4x is characterized by reliability, aesthetics and excellent functionality, being a worthy successor to the glorious traditions of the company. The model definitely needs a closer look, which will be covered in this review.
Appearance
The device has a standard external design, exactly repeating the design of most smartphones currently produced. There is no marking on the front side; the screen, made using 2.5 D technology, is covered with protective glass on top. The display's curves are slight and almost invisible.
The touch buttons located below are illuminated during operation. Side faces and back panel They have a matte base and virtually no fingerprints remain on them. The body is made primarily of metal with the addition of plastic inserts.
The location of communications and controls in this model from Xiaomi is standard. This format does not cause inconvenience and does not require addiction. There are no complaints about the assembly of the case - all elements are carefully adjusted, there is no play or defects. There are several colors to choose from, so everyone can choose an option to their liking.
Ergonomics
The presence of rounded edges ensures ease of use of the device. It is possible to reassign touch control elements, which will be appreciated by left-handers. The lower location of the acoustic speaker does not surprise anyone. Although this place is not the most convenient, since in games it is often covered with a finger.
In general, it is worth noting that RedmiNote 4x is ergonomically designed and does not cause discomfort even during prolonged use. The coating of the case is tactilely pleasant, resistant to scratches and impacts, and the smartphone itself fits comfortably in the hand and does not slip out.
Display
Xiaomi Redmi Note 4x is equipped with a 5.5-inch screen. It operates using IPS technology and has FHD resolution. A protective glass is provided to protect the display from damage. Oleophobic coating is also present, so you won't have to worry about fingerprints.
The frames around the screen are not the thinnest, although this is a matter of taste. The picture pleases with its saturation, clarity and detail. You can easily see the smallest details of the image. The viewing quality does not decrease even in the sun - for budget model this is a significant advantage.
Viewing angles are good, even a significant deviation does not distort the picture. It is possible to configure graphics - manually and automatic mode, for which there are several templates.
Hardware platform
The technical characteristics of the model are also satisfactory. The device operates on the Snapdragon 625 chipset presented by Qualcomm. It includes 8 cores with a frequency of 2 GHz. The indicator is not the highest, but for an average-priced device it is quite a decent choice. The processor is manufactured using 14 nm technology, thanks to which it practically does not heat up even at times of peak load.
The Adreno 506 accelerator with a frequency of 650 MHz is responsible for processing graphic data. Such a combination provides trouble-free resolution of many problems. And not only in office applications, but also in multimedia applications.
RAM performance varies depending on the version of the device presented. It can be standard or premium, respectively, and the RAM memory is 3 or 4 GB. The interface works smoothly, applications launch quickly and function without the slightest complaints - everything that is required for comfortable use is here.
Shell
User interaction in Xiaomi Redmi Note 4x is carried out through a previously successfully proven connection. We are talking about the Android OS (version 6 is presented here) and the shell from the manufacturer MIUI (version 8). The implementation of the software is excellent, there are no complaints about its performance. Excellent functionality is harmoniously complemented by good workmanship and high aesthetics. Several design themes are available to the user; if desired, you can download new ones from the network.
The default set of applications is not amazing in variety. But everything required for operation and data protection is available here. Additional programs can be downloaded from specialized resources. Multitasking is implemented very well high level, and in general the shell leaves a positive impression.
Camera
The manufacturer equipped the device with two cameras. The main module has a resolution of 13 megapixels. It has an improved ƒ/2.0 aperture and phase-detection autofocus with sensors located directly on the sensor. The application has a simple and well-thought-out interface that even an inexperienced user can handle.
During the daytime you can get excellent quality and performance images. The indicators of clarity, brightness, saturation and naturalness in such photos do not cause any comments. Sharpness and color reproduction are also in perfect order. At dusk, the quality deteriorates significantly, although this is not a problem with a specific device, but with the entire budget series of devices.
Video shooting is available in Full HD resolution. You should be careful - the resolution is initially set to a lower resolution, which must be changed manually. IN otherwise The shooting will take place in 720p format.
The selfie camera has a resolution of 5 megapixels, which is typical for today's realities. Its parameters are sufficient to take high-quality pictures or video calls. Wide-angle optics - not only faces will be visible in the photo, but also the background surrounding them. It is better to avoid shooting at night - getting decent images will be extremely problematic.
Sound, communications and other features
The radio modules in this model function at a high level. Wi-Fi is also available in the 5 GHz band, GPS positioning accurate, receiving/sending data, as well as interaction with base stations, does not cause any complaints.
The sound is also pleasing – the volume reserve fully covers the user’s needs. Even at the maximum value, wheezing and other defects do not appear. The bass is fine, the frequencies are clean and balanced. This is equally true both when listening to songs through headphones and when using the main speaker.
There is also a fingerprint scanner, which works clearly and quickly enough, although the stability of operation that is inherent in the “older” models is not observed here. The integrated IR port allows you to use your smartphone instead of a remote control, controlling the operation of all consumer electronics.
Battery
The review concludes with a study of autonomy indicators. The capacity of the existing battery pack is 4100 mAh. Subject to continuous use, the operating time without recharging will be about 12 hours. A very impressive figure, although everything here largely depends on the degree of load that the device will experience.
Thus, surfing the Internet will be possible for about 8 hours, reading books will be available for 10 hours, games with maximum load will take no more than 6 hours. Listening to music is possible for about 3 days non-stop, but always with the screen turned off.
There is no fast charging option here; a full charge level is achieved in about 2.5 hours.
Advantages of the model and its disadvantages
Among strengths the following should be highlighted:
- Good build;
- Metal body with excellent tactility;
- Excellent autonomy;
- High performance.
As for the disadvantages, they are as follows:
- Poor camera performance in low light conditions;
- Typical external design;
- No fast charging option.
conclusions
The model discussed above is an excellent example of a modern phablet. Thoughtful ergonomics are harmoniously complemented by stunning performance; extensive functionality is combined with aesthetic design. The device will be an excellent choice for those who want to get the maximum for quite decent money, without limiting themselves in anything, but at the same time without overpaying excessively for all their pleasures.
There are strengths and weaknesses here. However, there are much more advantages, and the existing disadvantages for the most part do not have a decisive impact on the ease of using a smartphone and the productivity of solving problems with it.
Technical specifications of Xiaomi Redmi Note 4X
| General characteristics | |
| Type | smartphone |
| OS version | Android 6.0 |
| Type of shell | classical |
| Housing material | metal and glass |
| Control | touch buttons |
| SIM card type | micro SIM+nano SIM |
| Number of SIM cards | 2 |
| Multi-SIM mode | alternating |
| Weight | 165 g |
| Dimensions (WxHxD) | 76x151x8.45 mm |
| Screen | |
| Screen type | color IPS, touch |
| Touch screen type | multi-touch, capacitive |
| Diagonal | 5.5 inch |
| Image Size | 1920x1080 |
| Pixels per inch (PPI) | 401 |
| Automatic screen rotation | There is |
| Light indication of events | There is |
| Multimedia capabilities | |
| Camera | 13 million pixels, LED flash |
| Camera functions | autofocus |
| Diaphragm | F/2 |
| Recording videos | yes (MPEG4) |
| Front-camera | yes, 5 million pixels. |
| Audio | MP3, AAC, WAV, WMA, FM radio |
| Headphone jack | 3.5 mm |
| Connection | |
| Standard | GSM 900/1800/1900, 3G, 4G LTE, LTE-A Cat. 6, VoLTE |
| LTE bands support | FDD-LTE: bands 1, 3, 4, 5, 7, 8, 20; TDD-LTE: bands 38, 40 |
| Interfaces | Wi-Fi 802.11n, Wi-Fi Direct, Bluetooth 4.1, IRDA, USB |
| Satellite navigation | GPS/GLONASS/BeiDou |
| A-GPS system | There is |
| Memory and processor | |
| Built-in memory capacity | 32 GB |
| RAM capacity | 3 GB |
| Memory card slot | yes, up to 128 GB (combined with a slot for a second SIM card) |
| Nutrition | |
| Battery capacity | 4100 mAh |
| Battery | non-removable |
| Charging connector type | micro-USB |
| Other features | |
| Speakerphone (built-in speaker) | There is |
| Control | voice dialing, voice control |
| Airplane mode | There is |
| A2DP profile | There is |
| Sensors | illumination, proximity, Hall, gyroscope, fingerprint reading |
| Flashlight | There is |
| USB-host | There is |
Xiaomi Redmi Note 4X - budget smartphone, which received very powerful hardware for its class. The device also has a large screen and a first-class design. The official announcement of the gadget took place in February 2017.
Appearance and ergonomics
The body of the Xiaomi Redmi Note 4X is made of high-quality anodized aluminum. At the back there are also plastic inserts for antennas with elegant dividing lines. The speaker for melodies is located at the bottom end, the rear panel is freed up for the camera and fast scanner fingerprints. The shape of the case can be called neat and stylish due to the rounded corners and edges. Thanks to this design, the device feels comfortable in the palm of your hand, although it has a large screen covered with 2.5D glass. The brushed metal does not allow the device to slip much in your hands, so it is comfortable to hold. Below the display there are three touch buttons for navigation. But inside there is a powerful 4100 mAh battery. Available colors: gold, grey, pink and black. Dimensions: height - 151 mm, width - 76 mm, thickness - 8.5 mm, weight - 165 g.
Display
The inexpensive smartphone Redmi Note 4X has a large 5.5-inch screen. An IPS matrix is installed here, which is covered with elegant 2.5D glass on top. There is an effective oleophobic coating, which allows you to view the image directly on the street in sunny weather. The resolution of this display is 1920 by 1080 pixels, which allows the user to enjoy a detailed picture. The frames near the screen are not the thinnest. High Contrast complemented by the possibility self-configuration colors at your discretion. You can easily set warmer or cooler colors.
Hardware and performance
Redmi Note 4X comes in several versions. The gadget usually hits global markets with an eight-core Snapdragon 625 processor, 32 GB of built-in storage and 3 GB of RAM. So, in the AnTuTu test this model scores about 62,000 points. As for the second version, it seems to be more advanced, as it is equipped with a MediaTek Helio X20 processor with ten cores. Moreover, 2 out of 10 cores are extremely fast - Cortex-A72. There is also more memory - 64 GB of user memory + 4 GB of RAM. Naturally, the latest modification shows several better performance, namely by 20-30%. At the same time, both devices demonstrate fast speed in everyday tasks. The buyer will be greeted from the operating room box Android system 6.0 along with the MIUI 8 shell. There are no errors or freezes, the phone works really clearly and quickly.
Communication and sound
Thanks to the high-quality conversational speaker in the Xiaomi Redmi Note 4X, the interlocutor can be heard quite well in different situations. However, its volume is above average. There are no problems with the microphone. It is worth highlighting the loud multimedia speaker, which can still wheeze at the highest volume. The device supports two SIM cards: micro SIM + nano SIM. It is able to operate in high-speed LTE networks.
Camera
The rear camera in the Xiaomi Redmi Note 4X smartphone is 13-megapixel, and also has an aperture ratio of 2.0 and a dual LED flash. Fast phase focusing makes it possible to instantly take the next photo. With help large quantity settings, you can create extraordinary shots with interesting effects. Concerning manual settings, then only basic functions remain. The overall quality of the images is good. But in some cases, noise reduction does not work correctly. The situation with the front 5-megapixel camera is decent. It also received an aperture ratio of 2.0, and there is a function for enhancing self-portraits.
conclusions
Redmi Note 4X can pleasantly surprise a person who decides to purchase a budget smartphone. It has absolutely everything that is important for a modern user - a large display, a good camera, excellent performance, fast Internet, high quality sound and wonderful design. But a price of around 10,000 rubles can really shock a potential buyer. The manufacturer has done a good job correcting the errors, so the device deserves all attention. If you want to buy a very inexpensive, but advanced phone in every sense, then Redmi Note 4X will be one of best options On the market.
Pros:
- High performance for its class.
- A large amount of memory.
- Contrasting and massive display.
- Stable and beautiful firmware.
- Very attractive appearance.
Minuses:
- A kind of MIUI shell.
- There is no fast charging of the built-in battery.
Technical specifications of Xiaomi Redmi Note 4x
| General characteristics | |
|---|---|
| Model | Redmi Note 4x |
| Date of announcement and start of sales | February 2017 / February 2017 |
| Dimensions (LxWxH) | 151 x 76 x 8.5 mm. |
| Weight | 165 g. |
| Available colors | black, gold, gray, pink |
| operating system | Android 6.0 (Marshmallow) + MIUI 8 |
| Connection | |
| Number and type of SIM cards | two, Micro-SIM+Nano-SIM, dual stand-by |
| Communication standard in 2G networks | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| Communication standard in 3G networks | HSDPA 850 / 900 / 1900 / 2100 |
| Communication standard in 4G networks | LTE band 1(2100), 3(1800), 5(850), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) - Snapdragon version LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500) - Mediatek version |
| Carrier Compatibility | MTS, Beeline, Megafon, Tele2, Yota |
| Data transfer | |
| WiFi | Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, hotspot |
| Bluetooth | 4.2, A2DP, LE |
| GPS | yes, A-GPS, GLONASS, BDS |
| NFC | No |
| Infrared port | There is |
| Platform | |
| CPU | Octa-core Qualcomm MSM8953 Snapdragon 625 Octa-core 2.0 GHz Cortex-A53 ten-core Mediatek MT6797 Helio X20 Deca-core 2.1 GHz |
| GPU | Adreno 506 - Snapdragon version Mali-T880 MP4 - Mediatek version |
| Inner memory | 16/32/64 GB - Snapdragon version 64 GB - Mediatek version |
| RAM | 3/4 GB - Snapdragon version 4 GB - Mediatek version |
| Ports and connectors | |
| USB | microUSB 2.0, USB On-The-Go |
| 3.5mm jack | There is |
| Memory card slot | microSD, up to 128 GB |
| Display | |
| Display type | IPS LCD capacitive, 16M colors |
| Screen size | 5.5 inches (~72.7% of the front surface of the device) |
| Display protection | Oleophobic coating |
| Camera | |
| Main camera | 13 MP (f/2.0, 1.12 µm), autofocus, dual-LED (dual tone) flash |
| Functionality of the main camera | Geo-tagging, touch focus, face detection, panorama, HDR |
| Video recording | 1080p@30fps, 720p@120fps |
| Front-camera | 5 MP, f/2.0, 1080p |
| Sensors | |
| Illuminance | There is |
| Approximations | There is |
| Gyroscope | There is |
| Compass | There is |
| Hall | No |
| Accelerometer | There is |
| Barometer | No |
| Fingerprint scanner | There is |
| Battery | |
| Battery type and capacity | Li-Po 4100 mAh |
| Battery mount | non-removable |
| Equipment | |
| Standard kit | Redmi Note 4x: 1 USB cable: 1 SIM tray eject clip: 1 User manual: 1 Warranty card: 1 Charger: 1 |
Prices
Video reviews
The Xiaomi Redmi Note 4 and Xiaomi Redmi Note 4x smartphones are quite similar to each other and it’s easy for a beginner to confuse them. But what’s even more alarming is when you buy a Note 4x, and in the system settings the name Note 4 is indicated and you think: “maybe they slipped me another smartphone.” How can you visually distinguish these two smartphones?
Appearance
Let's take a closer look at how Redmi Note 4 differs from 4x visually and how not to confuse them with each other when purchasing.
If you look at the top edge of smartphones, you will notice that Xiaomi Redmi Note 4 infrared port located in the middle, while in the Redmi Note 4x model it is closer to the microphone. At the same time, the microphone itself and the headphone input are placed identically.
The bottom edge has also undergone changes. The Redmi Note 4 has six holes on each side of the microUSB port and two bolts, while the Note 4x has only five holes.
On the back side, everything is visually similar, but the stripes above the camera and at the bottom of the Xiaomi Redmi Note 4x are thin and shiny.
Specifications
As for technical characteristics, then the Xiaomi Redmi Note 4 smartphone runs on a 10-core MTK Helio X20 c processor clock frequency 2.1 GHz, and 4x – 8-core Snapdragon 625 with a frequency of 2.0 GHz.
As operating system the first one runs Android 6.0, while the Redmi Note 4x can have Android 6.0.1 or Android 7.0 installed.
 |  |
|
| 84930 | 62679 | |
| Xiaomi Mido | Xiaomi Nikel | |
| Announcement date | 2016, August | 2017, February |
| Network support | GSM/CDMA/HSPA/EVDO/LTE | GSM/HSPA/LTE |
| - 2G | GSM 900 / 1800 / 1900 - SIM 1 and SIM 2 | |
| - 3G | HSDPA 850 / 900 / 1900 / 2100 | |
| - 4G | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 5(850), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) |
| Bluetooth | v4.2, A2DP, LE | v4.2, A2DP, LE |
| WiFi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, access point | Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, access point |
| Dimensions | 151 x 76 x 8.4 mm (5.94 x 2.99 x 0.33 inches) | 151 x 76 x 8.5 mm (5.94 x 2.99 x 0.33 inches) |
| Weight | 175 g (6.17 oz) | 165 g (5.82 oz) |
| Accumulator battery | Non-removable, Li-Po 4100 mAh | Non-removable, Li-Po 4100 mAh |
| Display | (~72.7% of the smartphone surface) | |
| - permission | 1080 x 1920 pixels (~401 ppi) | |
| CPU | Mediatek MT6797 Helio X20 | Qualcomm MSM8953 Snapdragon 625 |
| - CPU frequency | Deca-core 2.1 GHz | Octa-core 2.0 GHz Cortex-A53 |
| - graphic arts | Mali-T880 MP4 | Adreno 506 |
| Memory | 16 GB, 2 GB RAM - Standard version; 64 GB, 3 GB RAM - High version; | 32 GB, 3 RAM or 64 GB, 4 GB RAM |
| USB | microUSB v2.0, USB On-The-Go | microUSB v2.0, USB On-The-Go |
| Camera | Photo/Video | |
| - main | 13 MP, f/2.0, phase detection autofocus, dual LED dual-tone flash | |
| - frontal | 5 MP, f/2.0, 720p | 5 MP, f/2.0, 1080p |
| operating system | Android OS, v6.0 (Marshmallow) |
It is worth noting that on Xiaomi smartphone Redmi Note 4x, the absence of the X symbol in the firmware name means that the Global Version firmware and the smartphone supports LTE 20 frequencies (Band 20/800 Mhz), which are used in some regions of Russia. In the regular Note 4x, which is positioned for Chinese market, there is no support for these frequencies.
