In depth comparison and review of Xiaomi MI A2 and Xiaomi Redmi S2. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Form Factor | Touch | Touch | |
| Height | 158.7 mm | 160.73 mm | Xiaomi Redmi S2 has greater height than Xiaomi MI A2. |
| Width | 75.4 mm | 77.26 mm | Xiaomi Redmi S2 has greater width than Xiaomi MI A2. |
| Depth | 7.3 mm | 8.1 mm | Xiaomi MI A2 is narrower than Xiaomi MI A2. |
| Weight | 168 g | 170 g | Xiaomi MI A2 is lighter than Xiaomi MI A2. |
| Body Colour | Black | Lake blue | Gold | Grey | Blue | Rose gold | Gold | Black | Dark grey | |
| Body Material | Metal | - | |
| Waterproof (Water-resistant) | - | - | |
| SAR Value | 0.639 W/kg (body), 0.963 W/kg (head) | 1.577 W/kg (body), 0.429 W/kg (head) | |
| Connector Type | USB Type-C - 24 pin USB-C | Micro-USB - 5 pin Micro-USB Type B Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM |
| DISPLAY | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | - | |
| Screen Size (Display Size) | 5.99" | 5.99" | Both phones have the same screen size. |
| Screen Resolution (Display Resolution) | 2160 x 1080 pixels | 1440 x 720 pixels | Xiaomi MI A2 has better screen resolution than Xiaomi Redmi S2. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 403 ppi | 269 ppi | Xiaomi MI A2 has better pixel density than Xiaomi Redmi S2. |
| Aspect Ratio | 18:9 | 18:9 | |
| Max Brightness | - | 450 cd/m² | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 1500:1 | 1000:1 | Xiaomi MI A2 has better display contrast ratio than Xiaomi Redmi S2. |
| Display Features | 2.5D curved glass | Night Display, Sunlight Display, Reading mode, Colour temperature adjustment | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | - |
| PROCESSOR | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 660 | Qualcomm Snapdragon 625 | |
|---|---|---|---|
| Clock Speed | 2.2 GHz | - | |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| 64-bit Architecture | - | Yes | Xiaomi Redmi S2 has 64-bit architecture. |
| Graphics System (GPU) | - | Qualcomm ADRENO 506 |
| MEMORY | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| RAM | 4 GB | 3 GB | Xiaomi MI A2 has more RAM than Xiaomi Redmi S2. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 32 GB | Both phones have the same internal memory capacity. |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSDXC - up to 256 GB |
| CAMERA | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 2 | |
|---|---|---|---|
| Sensor Resolution | 20 Megapixel | 12 Megapixel | Xiaomi MI A2 has better camera resolution than Xiaomi Redmi S2. |
| Sensor Size | 1/2.8" | - | |
| Sensor Name | Sony Exmor RS IMX376 sensor | - | |
| Lens Aperture | F/1.75 | F/2.2 | Xiaomi MI A2 has better lens aperture than Xiaomi MI A2. |
| Focus Adjustment | Automatic | Automatic | |
| Special Effects | HDR, Beautify 4.0 | HDR, low light enhancement | |
| Camera Modes | Burst mode, Panorama, portrait mode, AI portrait mode, group selfi mode, AI Beauty | Panorama, portrait mode, AI portrait mode | |
| Face Recognition (Face ID) | Face recognition | Face recognition | Both phones have face detection. |
| Light Source | LED light | LED flash | |
| 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 | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), AI Dual camera, 4-in-1 Super Pixel | Phase Detect Auto-Focus (PDAF), AI Dual camera |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 5 Megapixel | Xiaomi MI A2 has better second camera resolution than Xiaomi Redmi S2. |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/2.9" | - | |
| Sensor Name (2nd Camera) | Sony Exmor RS IMX486 sensor | - | |
| Lens Aperture (2nd Camera) | F/1.75 | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 16 Megapixel | Xiaomi MI A2 has better front camera resolution than Xiaomi Redmi S2. |
| Sensor Name (Front) | Sony Exmor RS IMX376 sensor | - | |
| Lens Type (Front) | - | Wide-angle lens | |
| Lens Aperture (Front) | F/2.2 | F/2.0 | Xiaomi Redmi S2 has better front lens aperture than Xiaomi MI A2. |
| Focus Adjustment | Automatic | - | |
| Special Effects (Front) | - | Precise bokeh effect, AI Beautify 4.0 | |
| HDR Mode (Front) | - | Auto HDR mode | |
| Camera Modes (Front) | - | Wide selfie mode | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI A2 has face detection. |
| Light Source (Front) | - | LED flash | |
| Camera Features (Front) | AI-powered portrait mode | - |
| BATTERY AND CHARGING | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Battery Capacity (Battery Size) | 3010 mAh | 3080 mAh | Xiaomi Redmi S2 has larger battery capacity than Xiaomi MI A2. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 3.0 | - | Xiaomi MI A2 has fast charging technology. |
| Battery Technology | Lithium Ion | - |
| CELLULAR | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android One | - | |
| User Interface | - | MIUI 9 | |
| Intelligent Assistant | Google Assistant | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou |
| COMMUNICATIONS | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, LTE, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | Band 1, Band 2, Band 4, Band 5, Band 8 | Band 1, Band 2, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 1900, 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 | Band 1, 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 | 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 802.11a/b/g/n/ac | Infrared (IrDA), IEEE 802.11b/g/n | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 4.2 | |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, MIDI, MP4, AMR-WB, AMR-NB | WAV, AAC, PCM, 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, ASP | VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP |
| FEATURES | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor, hall sensor, vibration sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyro sensor | |
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader | |
| Additional Phone Features | Wi-Fi Miracast, AI Engine | Infrared remote control, Dual microphones |
| OTHERS | Xiaomi MI A2 | Xiaomi Redmi S2 |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool, clear soft case, Type-C to audio converter | USB cable, power adapter, SIM card removal tool, clear soft case |
|---|
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