In depth comparison and review of Xiaomi MI A3 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 A3 | OPPO A57s |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | - | CPH2385 | |
| Form Factor | Touch | Touch | |
| Height | 153.48 mm | 163.74 mm | OPPO A57s has greater height than Xiaomi MI A3. |
| Width | 71.85 mm | 75.03 mm | OPPO A57s has greater width than Xiaomi MI A3. |
| Depth | 8.475 mm | 7.99 mm | OPPO A57s is narrower than Xiaomi MI A3. |
| Weight | 173.8 g | 187 g | Xiaomi MI A3 is lighter than Xiaomi MI A3. |
| Body Colour | Kind of grey | Starry black | |
| Body Material | Corning Gorilla Glass 5 | Composite polymer | |
| Waterproof (Water-resistant) | - | - | OPPO A57s is waterproof. |
| IP rating | - | IPX4 | |
| SAR Value | 2.34 W/kg (limb), 1.097 W/kg (body), 0.301 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 |
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 A3 | OPPO A57s |
|---|
| Display Type | OLED display | LCD display | |
|---|---|---|---|
| Display Technology | AMOLED | LCD | |
| Screen Size (Display Size) | 6.088" | 6.56" | OPPO A57s has larger screen size than Xiaomi MI A3. |
| Screen Resolution (Display Resolution) | 1560 x 720 pixels | 1612 x 720 pixels | OPPO A57s has better screen resolution than Xiaomi MI A3. |
| Display Format | HD+ | HD+ | |
| Pixel Density | - | 269 ppi | |
| Aspect Ratio | 19.5:9 | 20.1:9 | |
| Max Brightness | - | 600 cd/m² | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 60000:1 | 1500:1 | Xiaomi MI A3 has better display contrast ratio than OPPO A57s. |
| Display Refresh Rate | - | 60 Hz | |
| Touch Sampling Rate | - | 60 Hz | |
| Display Features | 2.5D Glass, Dot Drop display | Night mode, Eye comfort mode, 96% NTSC | |
| Display Protection (Screen Protector) | Corning Gorilla Glass 5 (scratch resistant glass) | Panda Glass MN228 |
| PROCESSOR | Xiaomi MI A3 | OPPO A57s |
|---|
| Processor Type (CPU) | Qualcomm Snapdragon 665 | MediaTek Helio G35 | |
|---|---|---|---|
| Clock Speed | 2 GHz | 2.3 GHz | OPPO A57s has higher clock speed than Xiaomi MI A3. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | Qualcomm ADRENO 610 | IMG GE8320 |
| MEMORY | Xiaomi MI A3 | OPPO A57s |
|---|
| RAM | LPDDR4X SDRAM - 4 GB | LPDDR4X SDRAM - 4 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 64 GB | 128 GB | OPPO A57s has more internal memory than Xiaomi MI A3. |
| Memory Interface | - | eMMC 5.1 | |
| Supported Flash Memory Cards (Expandable Memory) | Up to 256 GB | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | Xiaomi MI A3 | OPPO A57s |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 3 | 2 | |
|---|---|---|---|
| Sensor Resolution | 48 Megapixel | 50 Megapixel | OPPO A57s has better camera resolution than Xiaomi MI A3. |
| Sensor Size | 1/2" | 1/2.76" | OPPO A57s has better camera sensor size than Xiaomi MI A3. |
| Sensor Name | - | Samsung S5KJN1 | |
| Lens Aperture | F/1.79 | F/1.8 | Xiaomi MI A3 has better lens aperture than Xiaomi MI A3. |
| Lens Construction | 6-element | 5-element | |
| Field of View (FoV) | - | 77 degree(s) | |
| Pixel Size | 1.6 μm | 0.64 μm | Xiaomi MI A3 has larger camera pixel size than OPPO A57s. |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | - | 27 mm | |
| Digital Zoom | - | 5x | |
| Special Effects | - | Stickers | |
| Camera Modes | AI portrait mode | Panorama, Time-lapse mode, Pro mode, Portrait, Night | |
| Light Source | Flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps, Slo-mo video 1280 x 720 (720p) at 120 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), 4-in-1 Super Pixel, AI scene detection, AI Triple camera, 27 different scenes | - |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 8 Megapixel | 2 Megapixel | Xiaomi MI A3 has better second camera resolution than OPPO A57s. |
|---|---|---|---|
| Sensor Size (2nd Camera) | - | 1/5" | |
| Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
| Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | Xiaomi MI A3 has better second camera lens aperture than Xiaomi MI A3. |
| Lens Element Qty (2nd Camera) | - | 3-element | |
| Field of View (2nd Camera) | 118 degree(s) | 89 degree(s) | Xiaomi MI A3 has larger second camera lens field of view than OPPO A57s. |
| Pixel Size (2nd Camera) | - | 1.75 μm | |
| Minimum Focal Length (2nd Camera) | - | 21 mm | |
| Camera Functions (2nd Camera) | - | Monochrome |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | 2 Megapixel | - | |
|---|---|---|---|
| Camera Functions (3rd Camera) | Depth camera | - |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 32 Megapixel | 8 Megapixel | Xiaomi MI A3 has better front camera resolution than OPPO A57s. |
| Sensor Size (Front) | - | 1/1.4" | |
| Sensor Name (Front) | - | Omnivision OV08D10 sensor | |
| Lens Aperture (Front) | F/2.0 | F/2.0 | Both phones have the same front camera lens aperture. |
| Lens Element Qty (Front) | 5-element | 5-element | |
| Field of View (Front) | 79 degree(s) | 79 degree(s) | Both phones have the same front lens field of view. |
| Pixel Size (Front) | 1.6 μm | 1.12 μm | Xiaomi MI A3 has larger front camera pixel size than OPPO A57s. |
| Focus Adjustment | Focus free | Focus free | |
| Min Focal Length (Front) | - | 26 mm | |
| Special Effects (Front) | - | Stickers | |
| Camera Modes (Front) | Selfie panorama, AI portrait mode, AI Beautify | Panorama, Time-lapse mode, Portrait | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
| Camera Features (Front) | 4-in-1 Super Pixel technology, AI scene detection, 12 different scenes, AI Selfie, Palm shutter, AI face unlock | - |
| BATTERY AND CHARGING | Xiaomi MI A3 | OPPO A57s |
|---|
| Battery Capacity (Battery Size) | 4030 mAh | 5000 mAh | OPPO A57s has larger battery capacity than Xiaomi MI A3. |
|---|---|---|---|
| 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 |
| CELLULAR | Xiaomi MI A3 | OPPO A57s |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | - | 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 A3 | 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 28, 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, FDD 700 APT, 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 A3 | OPPO A57s |
|---|
| Supported Digital Audio Standards | WAV, AAC, PCM, MP3, FLAC, AAC +, eAAC+, 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, XviD, H.264, M4V, MPEG4-ASP, MPEG-4 SP, MP4 | MKV, FLV, AVI, MOV, ASF, 3GP, M4V, TS, M2TS, WebM, MP4 | |
| Sound Enhancements | - | Dirac sound technologies |
| FEATURES | Xiaomi MI A3 | 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, vibration sensor | Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor | |
| Security Devices | Fingerprint reader (under display) | Face recognition, fingerprint reader (side) | |
| Additional Phone Features | AI face unlock | 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 A3 | OPPO A57s |
|---|
| Included Accessories | Power adapter, SIM card removal tool, USB-C cable, soft case | SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter | |
|---|---|---|---|
| Compliant Standards | - | IPX4 |
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