In depth comparison and review of Xiaomi MI A2 and OPPO A57s. 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 | OPPO A57s |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | CPH2385 | |
| Form Factor | Touch | Touch | |
| Height | 158.7 mm | 163.74 mm | OPPO A57s has greater height than Xiaomi MI A2. |
| Width | 75.4 mm | 75.03 mm | Xiaomi MI A2 has greater width than OPPO A57s. |
| Depth | 7.3 mm | 7.99 mm | Xiaomi MI A2 is narrower than Xiaomi MI A2. |
| Weight | 168 g | 187 g | Xiaomi MI A2 is lighter than Xiaomi MI A2. |
| Body Colour | Black | Lake blue | Gold | Starry black | |
| Body Material | Metal | Composite polymer | |
| Waterproof (Water-resistant) | - | - | OPPO A57s is waterproof. |
| IP rating | - | IPX4 | |
| SAR Value | 0.639 W/kg (body), 0.963 W/kg (head) | 1.015 W/kg (body), 0.957 W/kg (head), 2.399 W/kg (limb) | |
| Connector Type | USB Type-C - 24 pin USB-C | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | - | Nano SIM + nano SIM/microSD |
| DISPLAY | Xiaomi MI A2 | OPPO A57s |
|---|
| Display Type | LCD display | LCD display | |
|---|---|---|---|
| Display Technology | IPS | LCD | |
| Screen Size (Display Size) | 5.99" | 6.56" | OPPO A57s has larger screen size than Xiaomi MI A2. |
| Screen Resolution (Display Resolution) | 2160 x 1080 pixels | 1612 x 720 pixels | Xiaomi MI A2 has better screen resolution than OPPO A57s. |
| Display Format | Full HD+ | HD+ | |
| Pixel Density | 403 ppi | 269 ppi | Xiaomi MI A2 has better pixel density than OPPO A57s. |
| Aspect Ratio | 18:9 | 20.1:9 | |
| Max Brightness | - | 600 cd/m² | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 1500:1 | 1500:1 | Both phones have the same display contrast ratio. |
| Display Refresh Rate | - | 60 Hz | |
| Touch Sampling Rate | - | 60 Hz | |
| Display Features | 2.5D curved glass | Night mode, Eye comfort mode, 96% NTSC | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | Panda Glass MN228 |
| PROCESSOR | Xiaomi MI A2 | OPPO A57s |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 660 | MediaTek Helio G35 | |
|---|---|---|---|
| Clock Speed | 2.2 GHz | 2.3 GHz | OPPO A57s has higher clock speed than Xiaomi MI A2. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | - | IMG GE8320 |
| MEMORY | Xiaomi MI A2 | OPPO A57s |
|---|
| RAM | 4 GB | LPDDR4X SDRAM - 4 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | OPPO A57s has more internal memory than Xiaomi MI A2. |
| Memory Interface | - | eMMC 5.1 | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | Xiaomi MI A2 | OPPO A57s |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 2 | |
|---|---|---|---|
| Sensor Resolution | 20 Megapixel | 50 Megapixel | OPPO A57s has better camera resolution than Xiaomi MI A2. |
| Sensor Size | 1/2.8" | 1/2.76" | Xiaomi MI A2 has better camera sensor size than OPPO A57s. |
| Sensor Name | Sony Exmor RS IMX376 sensor | Samsung S5KJN1 | |
| Lens Aperture | F/1.75 | F/1.8 | Xiaomi MI A2 has better lens aperture than Xiaomi MI A2. |
| Lens Construction | - | 5-element | |
| Field of View (FoV) | - | 77 degree(s) | |
| Pixel Size | - | 0.64 μm | |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | - | 27 mm | |
| Digital Zoom | - | 5x | |
| Special Effects | HDR, Beautify 4.0 | Stickers | |
| Camera Modes | Burst mode, Panorama, portrait mode, AI portrait mode, group selfi mode, AI Beauty | Panorama, Time-lapse mode, Pro mode, Portrait, Night | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI A2 has 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 | - |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 12 Megapixel | 2 Megapixel | Xiaomi MI A2 has better second camera resolution than OPPO A57s. |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/2.9" | 1/5" | OPPO A57s has better second camera sensor size than Xiaomi MI A2. |
| Sensor Name (2nd Camera) | Sony Exmor RS IMX486 sensor | - | |
| Lens Aperture (2nd Camera) | F/1.75 | F/2.4 | Xiaomi MI A2 has better second camera lens aperture than Xiaomi MI A2. |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Field of View (2nd Camera) | - | 89 degree(s) | |
| Pixel Size (2nd Camera) | - | 1.75 μm | |
| Minimum Focal Length (2nd Camera) | - | 21 mm | |
| Camera Functions (2nd Camera) | - | Monochrome |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 20 Megapixel | 8 Megapixel | Xiaomi MI A2 has better front camera resolution than OPPO A57s. |
| Sensor Size (Front) | - | 1/1.4" | |
| Sensor Name (Front) | Sony Exmor RS IMX376 sensor | Omnivision OV08D10 sensor | |
| Lens Aperture (Front) | F/2.2 | F/2.0 | OPPO A57s has better front lens aperture than Xiaomi MI A2. |
| Lens Element Qty (Front) | - | 5-element | |
| Field of View (Front) | - | 79 degree(s) | |
| Pixel Size (Front) | - | 1.12 μm | |
| Focus Adjustment | Automatic | Focus free | |
| Min Focal Length (Front) | - | 26 mm | |
| Special Effects (Front) | - | Stickers | |
| Camera Modes (Front) | - | Panorama, Time-lapse mode, Portrait | |
| Face Recognition (Face ID) | Face recognition | - | Xiaomi MI A2 has face detection. |
| Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Front) | AI-powered portrait mode | - |
| BATTERY AND CHARGING | Xiaomi MI A2 | OPPO A57s |
|---|
| Battery Capacity (Battery Size) | 3010 mAh | 5000 mAh | OPPO A57s has larger battery capacity than Xiaomi MI A2. |
|---|---|---|---|
| Fast Charging Technology | Qualcomm Quick Charge 3.0 | SuperVOOC Flash Charge technology | Both phones have fast charging technology. |
| Standby Time | - | 304 hours | |
| Talk Time | - | 1800 minutes | |
| Run Time Details | - | Talk: up to 1800 min Standby (4G): up to 304 hrs Playback (video): up to 13.4 hrs Playback (audio (via speakers, 50% volume)): up to 40 hrs |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | Xiaomi MI A2 | OPPO A57s |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | Android One | ColorOS 12.1 (based on Android 12) | |
| Intelligent Assistant | Google Assistant | - | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
| COMMUNICATIONS | Xiaomi MI A2 | OPPO A57s |
|---|
| Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | VoLTE, FDD-LTE, TDD-LTE, VoWiFi | |
|---|---|---|---|
| 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 5, Band 8 | |
| 3G UMTS Frequency | 2100, 1900, 1700, 850, 900 | 2100, 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 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | |
| 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 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | Infrared (IrDA), IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.3 BLE | |
| NFC | - | Yes | OPPO A57s has NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | - |
| MEDIA | Xiaomi MI A2 | OPPO A57s |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, MIDI, MP4, AMR-WB, AMR-NB | WAV, WMA, AAC, AMR, MP3, FLAC, AC-3, OGG, MIDI, APE (Monkey's Audio), LDAC, OPUS, MID, SBC, apt-X HD | |
|---|---|---|---|
| Supported Digital Video Standards | MKV, VC-1, XviD, MPEG-4, H.264, M4V, HEVC, H.265, ASP | MKV, FLV, AVI, MOV, ASF, 3GP, M4V, TS, M2TS, WebM, MP4 | |
| Sound Enhancements | - | Dirac sound technologies |
| FEATURES | Xiaomi MI A2 | OPPO A57s |
|---|
| 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, hall sensor, vibration sensor | Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor | |
| Security Devices | Fingerprint reader | Face recognition, fingerprint reader (side) | |
| Additional Phone Features | Wi-Fi Miracast, AI Engine | Noise reduction microphone, Fast Charging, 3 years of Security Updates, 2 years of OS upgrades, Cooling Graphite Thermal Pad, Reverse charging, super-linear dual speakers |
| OTHERS | Xiaomi MI A2 | OPPO A57s |
|---|
| Included Accessories | USB cable, power adapter, SIM card removal tool, clear soft case, Type-C to audio converter | SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter | |
|---|---|---|---|
| Compliant Standards | - | IPX4 |
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