Xiaomi MI A2 128 GB Specifications, Tests and Review

Display
5.99", 2160 x 1080
Front Camera
20 Megapixel
Main Camera
20 Megapixel
Operating System
Android One
Storage
128 GB
RAM
6 GB
Processor
Qualcomm Snapdragon 660
Battery
3010 mAh

Other Variants:

Get the key specs, technical data, ratings and full review of Xiaomi MI A2 128 GB 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 MI A2 128 GB
Product Type Smartphone
Form Factor Touch
Height 158.7 mm Better than 85 % of phones rated.
Width 75.4 mm Better than 81 % of phones rated.
Depth 7.3 mm Better than 96 % of phones rated.
Weight 168 g Worse than 69 % of phones rated.
Body Colour Black | Gold
Body Material Metal
Waterproof (Water-resistant) -
SAR Value 0.639 W/kg (body), 0.963 W/kg (head)
Connector Type USB Type-C - 24 pin USB-C
SIM Card Type (Size) Nano SIM
SIM Card Qty Dual-SIM

The Xiaomi MI A2 128 GB has dimensions 158.7 mm × 75.4 mm × 7.3 mm. Its weight is 168 g.

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DISPLAY Xiaomi MI A2 128 GB
Display Type LCD display
Display Technology LTPS IPS
Screen Size (Display Size) 5.99" Better than 75 % of phones rated.
Screen Resolution (Display Resolution) 2160 x 1080 pixels Better than 80 % of phones rated.
Display Format Full HD+
Pixel Density 403 ppi Better than 58 % of phones rated.
Aspect Ratio 18:9
Contrast Ratio 1500:1 Better than 50 % of phones rated.
Display Features 2.5D curved glass
Display Protection (Screen Protector) Corning Gorilla Glass 5 (scratch resistant glass)

The screen size reaches 5.99" inches. With a large display, phone offers a great experience for watching videos, playing games and reading. The best phones today are 6.5'' or more. They have the advantage of a large display area that allows you to see more content than with conventional display sizes. LCD displays are currently taking a back seat. This is mainly due to higher power consumption. In addition, they have the disadvantage of lower colour contrast, which can be reflected e.g. in the resulting photos. On the other hand, phones with LCD displays are in general cheaper than those with OLED technology.

Display Resolution of Xiaomi MI A2 128 GB is 2160 x 1080 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. Another important factor having impact on the final image is display´s pixel density. In case of this model, the value reaches 403 ppi. With pixel density, the higher the value, the sharper the image will be. On average today, the image fineness value is around 350-400 ppi. This will guarantee a sufficiently fine and sharp image for normal use. However, the best phones on the market today are equipped with pixel density of 450 ppi or higher.

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PROCESSOR Xiaomi MI A2 128 GB
Processor Type (CPU) Qualcomm Snapdragon 660
Clock Speed 2.2 GHz Better than 79 % of phones rated.
Processor Core Qty 8-core Better than 99 % of phones rated.

Xiaomi MI A2 128 GB is supplied with Qualcomm Snapdragon 660. 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 MI A2 128 GB is 2.2 GHz. As standard today, you'll find this value between 1.8 GHz and 2.8 GHz.

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MEMORY Xiaomi MI A2 128 GB
RAM 6 GB Better than 85 % of phones rated.
Internal Memory Size (Storage Capacity) 128 GB Better than 90 % of phones rated.

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 128 GB storage. It is currently the most common storage size among today´s smartphones. The capacity is perfectly adequate for the average user. It will allow you to store thousands of photos, high-resolution videos, dozens of apps and several games on your phone. But if you're one of those really demanding users and you use your phone to shoot 4K videos etc., then you should rather pay extra to have a larger storage 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.

Size of the RAM memory tells us how powerful the phone is. Xiaomi MI A2 128 GB is equipped with 6 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 MI A2 128 GB
MAIN CAMERA
Number of Main Cameras 2
Sensor Resolution 20 Megapixel Better than 84 % of phones rated.
Sensor Size 1/2.8" Better than 89 % of phones rated.
Sensor Name Sony Exmor RS IMX376 sensor
Lens Aperture F/1.75 Better than 85 % of phones rated.
Focus Adjustment Automatic
Special Effects HDR, Beautify 4.0
Camera Modes Burst mode, Panorama, portrait mode, AI portrait mode, group selfi mode, AI Beauty
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, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps, 720 x 480 (480p) at 30 fps
Camera Features (Functions) Phase Detect Auto-Focus (PDAF), AI Dual camera, 4-in-1 Super Pixel
SECOND CAMERA
Sensor Resolution (2nd Camera) 12 Megapixel Better than 81 % of phones rated.
Sensor Size (2nd Camera) 1/2.9"
Sensor Name (2nd Camera) Sony Exmor RS IMX486 sensor
Lens Aperture (2nd Camera) F/1.75 Better than 95 % of phones rated.
FRONT CAMERA
Number of Front Cameras 1
Sensor Resolution (Front) 20 Megapixel Better than 91 % of phones rated.
Sensor Name (Front) Sony Exmor RS IMX376 sensor
Lens Aperture (Front) F/2.2 Better than 51 % of phones rated.
Focus Adjustment Automatic
Face Recognition (Face ID) Face recognition Better than 92 % of phones rated.
Camera Features (Front) AI-powered portrait mode

The rear camera of the phone Xiaomi MI A2 128 GB has 2 lenses. Today's modern phones usually have several rear lenses. The most common are macro lens, telephoto lens and wide-angle lens. Each is used to capture the perfect photo - macro lens is designed for close-up photography, telephoto lens, often equipped with an optical zoom, is for photos of objects in distance, and wide-angle lens captures larger areas where you need a wider field of view. The resolution of main lens is 20 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.

The size of the phone's sensor is also among the parameters that affect quality of the photo. In case of Xiaomi MI A2 128 GB, it is 1/2.8". Focus mainly on the value after the slash, where the higher it is, the better photo quality will be. Another important factor is the aperture, which in this case is F/1.75 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.

Second camera
The resolution reaches size of 12 Megapixel. In addition, this lens also features lens aperture of F/1.75.

Front camera
The front camera of phone Xiaomi MI A2 128 GB has one lens. This number of lenses is standard on most smartphones nowadays. The lens is equipped with 20 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 MI A2 128 GB
Battery Capacity (Battery Size) 3010 mAh Better than 70 % of phones rated.
Fast Charging Technology Qualcomm Quick Charge 3.0 Better than 86 % of phones rated.
Battery Technology Lithium Ion

The battery size of Xiaomi MI A2 128 GB is 3010 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 fast charging function will also please many people. Owing to fast charging, phone charges up to several times faster, which you will appreciate, for example, on the go.

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CELLULAR Xiaomi MI A2 128 GB
Technology WCDMA (UMTS) / GSM
Mobile Broadband Generation 4G Better than 88 % of phones rated.
Operating System Android One
Intelligent Assistant Google Assistant
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 MI A2 128 GB supports 4G. 3G connectivity is now only found in the oldest phones. The operating system in the case of this model is Android One.

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COMMUNICATIONS Xiaomi MI A2 128 GB
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 4, Band 5, Band 8
3G UMTS Frequency 2100, 1900, 1700, 850, 900
4G LTE Band Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 20, Band 38, Band 40
4G LTE Frequency FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 800 DD, TDD 2600, TDD 2300
Wireless Interface Infrared (IrDA), IEEE 802.11a/b/g/n/ac
Bluetooth Bluetooth 5.0
Messaging Services SMS, MMS

Bluetooth 5.0 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 MI A2 128 GB
Supported Digital Audio Standards WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, MIDI, MP4, AMR-WB, AMR-NB
Supported Digital Video Standards MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP
FEATURES Xiaomi MI A2 128 GB
Phone Functions Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert
Sensors Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, vibration sensor
Security Devices Fingerprint reader
Additional Phone Features Wi-Fi Miracast, AI Engine
OTHERS Xiaomi MI A2 128 GB
Included Accessories USB cable, power adapter, SIM card removal tool, clear soft case, Type-C to audio converter

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