Xiaomi Redmi 4X Specifications, Tests and Review

Display
5", 1280 x 720
Front Camera
5 Megapixel
Main Camera
13 Megapixel
Storage
32 GB
RAM
3 GB
Processor
Qualcomm Snapdragon 435
Battery
4100 mAh

Get the key specs, technical data, ratings and full review of Xiaomi Redmi 4X all in one place. Compare your selected model with other alternatives and give your decision on the best phone a solid base with our comprehensive overview.

DESIGN AND DIMENSIONS Xiaomi Redmi 4X
Product Type Smartphone
Form Factor Touch
Height 139.24 mm Better than 53 % of phones rated.
Width 69.96 mm Better than 54 % of phones rated.
Depth 8.65 mm Better than 70 % of phones rated.
Weight 146 g Worse than 53 % of phones rated.
Body Colour Black
Body Material Metal
Waterproof (Water-resistant) -
SAR Value 1.5 W/kg (body), 0.583 W/kg (head)
Connector Type Micro-USB - 5 pin Micro-USB Type B
Headset jack - mini-phone 3.5mm
SIM Card Type (Size) Micro SIM, nano SIM
SIM Card Qty Dual-SIM
SIM Card Configuration Details Micro SIM + nano SIM/microSD

The Xiaomi Redmi 4X has dimensions 139.24 mm × 69.96 mm × 8.65 mm. Its weight is 146 g.

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DISPLAY Xiaomi Redmi 4X
Screen Size (Display Size) 5" Better than 56 % of phones rated.
Screen Resolution (Display Resolution) 1280 x 720 pixels Better than 63 % of phones rated.
Display Format HD
Max Brightness 450 cd/m²
Contrast Ratio 1000:1
Display Features 2.5D Glass, Night Display, Reading mode, Colour temperature adjustment
Display Protection (Screen Protector) Corning Gorilla Glass (scratch resistant glass)

The screen size reaches 5" inches. Phones with smaller displays have the advantage of being easier to use with one hand. However, compared to phones with large screens, they provide a lower user experience. Nevertheless, if you don't plan to watch movies or play games on your phone regularly and just expect basic functionality, this size should be good enough for you.

Display Resolution of Xiaomi Redmi 4X is 1280 x 720 pixels. A higher display resolution is a prerequisite for a sharper image. The standard for mid-range phones today is a Full HD resolution of 1920 × 1080 px. Cheaper phones, which usually have a smaller diagonal, have an HD resolution of 1280 × 720 px. Smaller resolutions can only be found in older models. Best phones, on the other hand, have a 4K resolution of 3840 x 2160 px.

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PROCESSOR Xiaomi Redmi 4X
Processor Type (CPU) Qualcomm Snapdragon 435
Clock Speed 1.4 GHz Worse than 52 % of phones rated.
Processor Core Qty 8-core Better than 99 % of phones rated.
64-bit Architecture Yes Better than 82 % of phones rated.
Graphics System (GPU) Qualcomm ADRENO 505

Xiaomi Redmi 4X is supplied with Qualcomm Snapdragon 435. The number of processor cores is 8. It is a number of cores that plays an important role in evaluating the performance of phone as it is responsible for computing operations. Smartphones already commonly have a core count of around 4 to 8. Multi-core processors can perform better and reduce the processing time of a request to a minimum, which is reflected in the responsiveness of the phone, e.g. in the speed of opening applications. Another important parameter is the processor frequency, which indicates how many instructions the phone can process in one second. Similar to refresh rate, the higher the number, the faster the phone responds. Processor frequency of phone Xiaomi Redmi 4X is 1.4 GHz. As standard today, you'll find this value between 1.8 GHz and 2.8 GHz.

The processor also includes the graphics accelerator Qualcomm ADRENO 505.

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MEMORY Xiaomi Redmi 4X
RAM 3 GB Better than 67 % of phones rated.
Internal Memory Size (Storage Capacity) 32 GB Better than 62 % of phones rated.
Supported Flash Memory Cards (Expandable Memory) microSDHC, microSDXC - up to 128 GB

One of the most important parameters for user´s decision is often internal memory capacity. The larger it is, the more apps, photos, movies and other files your phone can store. This phone has 32 GB storage. This memory capacity is ideal for those who have a few basic apps and a few dozen photos on their phone. If you don't expect to use your phone to play games or need to store high-resolution photos, this size should be sufficient. There is almost no probability you're likely to see this low capacity on new smartphones. The standard memory today is around 64 and 128 GB. The best phones have internal memory of 256 GB or more. Nowadays, you can usually find one phone model on the market with several different memory sizes. This allows each user to choose what suits them best.

For this model it is possible to increase the storage size by inserting a memory card.

Size of the RAM memory tells us how powerful the phone is. Xiaomi Redmi 4X is equipped with 3 GB. Commonly today you will find phones with 6 to 8 GB of RAM. This means that the phone can easily handle normal operation and more demanding applications or games. Higher RAM of 12 GB can be found in best phones on market and are ideal especially for avid gamers. On the other hand, operating memory below 4 GB is more of an issue with lower-end phones and older models. However, even they will find their fans among less demanding users, who don´t want to spend much on buying new phone.

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CAMERA Xiaomi Redmi 4X
MAIN CAMERA
Number of Main Cameras 1
Sensor Resolution 13 Megapixel Better than 78 % of phones rated.
Lens Aperture F/2.0 Worse than 52 % of phones rated.
Lens Construction 5-element
Focus Adjustment Automatic
Special Effects HDR
Camera Modes Burst mode, Panorama
Face Recognition (Face ID) Face recognition Better than 79 % of phones rated.
Light Source LED light
Video Resolutions 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps
Camera Features (Functions) Phase Detect Auto-Focus (PDAF)
FRONT CAMERA
Number of Front Cameras 1
Sensor Resolution (Front) 5 Megapixel Worse than 55 % of phones rated.
Lens Aperture (Front) F/2.2 Better than 51 % of phones rated.
Camera Modes (Front) Beautify Selfie mode
Face Recognition (Face ID) Face recognition Better than 92 % of phones rated.

The rear camera of the Xiaomi Redmi 4X has only one lens. Single lens is more typical for older phones or lower-end phones with lower quality cameras. The rear cameras of modern phones nowadays are usually equipped with two, three and sometimes even five rear camera lenses. The resolution of main lens is 13 Megapixel. Nonetheless, resolution alone does not necessarily mean a good photo. Therefore, you should look at other parameters such as lens aperture or pixel size. Another important factor is the aperture, which in this case is F/2.0 and determines how much light passes through the sensor. Best phones have an aperture of up to F/1.5. But the most common lenses today are F/1.8 to F/2.2. In this case, the lower the number after the slash, the higher the photo quality. Many people will also benefit from the facial recognition feature. In translation it means the camera can recognise face of person in the frame and automatically focus on it.

Front camera
The front camera of phone Xiaomi Redmi 4X has one lens. This number of lenses is standard on most smartphones nowadays. The lens is equipped with 5 Megapixel. However, do not forget there are other factors than resolution having impact on the final quality of front camera photos. The main front lens also achieves F/2.2.

The facial recognition feature is just a nice cherry on top.

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BATTERY AND CHARGING Xiaomi Redmi 4X
Battery Capacity (Battery Size) 4100 mAh Better than 86 % of phones rated.
Standby Time 432 hours Better than 67 % of phones rated.
Talk Time 2160 minutes Better than 95 % of phones rated.
Run Time Details Talk: up to 2160 min
Playback (video): up to 15 hrs
Gaming: up to 13 hrs
Standby (LTE): up to 432 hrs
Playback (audio): up to 87 hrs
Reading: up to 26 hrs
Navigation: up to 15 hrs

The battery size of Xiaomi Redmi 4X is 4100 mAh. Nevertheless, battery capacity is not the only factor that affects the phone's battery life. For example - the size of the display, the performance of the processor, the use of data functions and, of course, the intensity of use of phone in general all have a significant impact on battery life. Standard for most smartphones today is a battery capacity of around 4500 to 5000 mAH. Phones with this battery size usually guarantee a phone life of at least 1 day. Older or cheaper smartphone models can then reach battery capacities typically around 2500 mAH and below. With this capacity, you may find that if you use your phone heavily, you may need to recharge your phone during the day.

The standby time for this phone is 432 hours and tells us how long the phone lasts on a single charge when you're not actively using it. The phone Xiaomi Redmi 4X will last one charge with constant phone calls 2160 minutes.

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CELLULAR Xiaomi Redmi 4X
Technology WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G Better than 88 % of phones rated.
User Interface MIUI 8
Navigation GPS, A-GPS, GLONASS, BeiDou

Standard 4G connectivity is currently being replaced by 5G, but is still the preserve of the latest phones. Xiaomi Redmi 4X supports 4G. 3G connectivity is now only found in the oldest phones.

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COMMUNICATIONS Xiaomi Redmi 4X
Data Transmission GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE
2G Band 850 GSM, 900 GSM, 1800 GSM, 1900 GSM
3G UMTS Band Band 1, Band 2, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 850, 900
4G LTE Band Band 1, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40
4G LTE Frequency FDD 2100, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2600, TDD 2300
Wireless Interface Infrared (IrDA), IEEE 802.11b/g/n
Bluetooth Bluetooth 4.1
Bluetooth Profiles HID
Messaging Services SMS, MMS

Bluetooth 4.1 must not be missing from the basic package. It makes it easy to connect wireless headphones to your phone, connect your phone to your TV, tablet, speaker and more.

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MEDIA Xiaomi Redmi 4X
Supported Digital Audio Standards WAV, AAC, PCM, AMR, MP3, FLAC, AAC +, eAAC+, APE (Monkey's Audio), DSD, AMR-WB, AMR-NB
Supported Digital Video Standards MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265
FEATURES Xiaomi Redmi 4X
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, gyro sensor
Security Devices Fingerprint reader
Additional Phone Features Infrared remote control
OTHERS Xiaomi Redmi 4X
Included Accessories USB cable, power adapter, SIM card removal tool

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