Side by side comparison and review of OPPO A57s and Xiaomi Redmi Note 12. Compare sizes, cameras, batteries, memory capacities and other key specifications and features to simplify the choice of your perfect phone. Our goal is to make it easier for you to decide on the phone that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | CPH2385 | - | |
| Form Factor | Touch | Touch | |
| Height | 163.74 mm | 165.66 mm | Xiaomi Redmi Note 12 has greater height than OPPO A57s. |
| Width | 75.03 mm | 75.96 mm | Xiaomi Redmi Note 12 has greater width than OPPO A57s. |
| Depth | 7.99 mm | 7.85 mm | Xiaomi Redmi Note 12 is narrower than OPPO A57s. |
| Weight | 187 g | 183.5 g | Xiaomi Redmi Note 12 is lighter than OPPO A57s. |
| Body Colour | Starry black | Ice blue | Onyx grey | Mint green | |
| Body Material | Composite polymer | - | |
| Protection | - | Dustproof, splashproof | |
| Waterproof (Water-resistant) | - | - | Both phones are waterproof. |
| IP rating | IPX4 | IP53 | |
| Repairability Index | - | 7.5 (out of 10) | |
| SAR Value | 1.015 W/kg (body), 0.957 W/kg (head), 2.399 W/kg (limb) | 2.55 W/kg (limb), 0.9 W/kg (head), 0.995 W/kg (body) | |
| Connector Type | Headset jack - mini-phone 3.5mm USB Type-C - 24 pin USB-C |
USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | - | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | LCD | AMOLED | |
| Screen Size (Display Size) | 6.56" | 6.67" | Xiaomi Redmi Note 12 has larger screen size than OPPO A57s. |
| Screen Resolution (Display Resolution) | 1612 x 720 pixels | 2400 x 1080 pixels | Xiaomi Redmi Note 12 has better screen resolution than OPPO A57s. |
| Display Format | HD+ | Full HD+ | |
| Pixel Density | 269 ppi | 395 ppi | Xiaomi Redmi Note 12 has better pixel density than OPPO A57s. |
| Aspect Ratio | 20.1:9 | - | |
| Max Brightness | 600 cd/m² | 1200 cd/m² | Xiaomi Redmi Note 12 has better display brightness than OPPO A57s. |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | 1500:1 | 4500000:1 | Xiaomi Redmi Note 12 has better display contrast ratio than OPPO A57s. |
| Display Refresh Rate | 60 Hz | 120 Hz | Xiaomi Redmi Note 12 has better refresh rate than OPPO A57s. |
| Touch Sampling Rate | 60 Hz | 240 Hz | |
| Display Features | Night mode, Eye comfort mode, 96% NTSC | Sunlight Display, Reading mode, DCI-P3 Wide colour gamut, DotDisplay, E2 Pro | |
| Display Protection (Screen Protector) | Panda Glass MN228 | - |
| PROCESSOR | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | Qualcomm Snapdragon 685 | |
|---|---|---|---|
| Clock Speed | 2.3 GHz | 2.8 GHz | Xiaomi Redmi Note 12 has higher clock speed than OPPO A57s. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | IMG GE8320 | Qualcomm ADRENO 610 |
| MEMORY | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| RAM | LPDDR4X SDRAM - 4 GB | LPDDR4X SDRAM - 4 GB | Both phones have the same RAM size. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| Memory Interface | eMMC 5.1 | UFS 2.2 | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSD, microSDXC - up to 1 TB | microSDHC, microSD, microSDXC - up to 1 TB |
| CAMERA | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 3 | |
|---|---|---|---|
| Sensor Resolution | 50 Megapixel | 50 Megapixel | Both phones have the same camera resolution. |
| Sensor Size | 1/2.76" | 1/2.76" | Both phones have the same camera sensor size. |
| Sensor Name | Samsung S5KJN1 | Samsung ISOCELL JN1 | |
| Lens Aperture | F/1.8 | F/1.8 | Both phones have the same camera lens aperture. |
| Lens Construction | 5-element | 5-element | |
| Field of View (FoV) | 77 degree(s) | - | |
| Pixel Size | 0.64 μm | 0.64 μm | Both phones have the same camera pixel size. |
| Focus Adjustment | Automatic | Automatic | |
| Minimum Focal Length (Focal Distance) | 27 mm | - | |
| Digital Zoom | 5x | - | |
| Special Effects | Stickers | Bokeh effect | |
| Camera Modes | Panorama, Time-lapse mode, Pro mode, Portrait, Night | Portrait mode | |
| Light Source | LED flash | LED flash | |
| Video Resolutions | 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 (Functions) | - | 4-in-1 to 1.28μm pixel |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 8 Megapixel | Xiaomi Redmi Note 12 has better second camera resolution than OPPO A57s. |
|---|---|---|---|
| Sensor Size (2nd Camera) | 1/5" | 1/4" | OPPO A57s has better second camera sensor size than Xiaomi Redmi Note 12. |
| Sensor Name (2nd Camera) | - | Omnivision OV08D sensor | |
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | F/2.4 | F/2.2 | Xiaomi Redmi Note 12 has better second camera lens aperture than OPPO A57s. |
| Lens Element Qty (2nd Camera) | 3-element | 5-element | |
| Field of View (2nd Camera) | 89 degree(s) | 120 degree(s) | Xiaomi Redmi Note 12 has larger second camera lens field of view than OPPO A57s. |
| Pixel Size (2nd Camera) | 1.75 μm | 1.12 μm | OPPO A57s has larger second camera pixel size than Xiaomi Redmi Note 12. |
| Minimum Focal Length (2nd Camera) | 21 mm | - | |
| Camera Functions (2nd Camera) | Monochrome | - |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 2 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Lens Element Qty (3rd Camera) | - | 3-element | |
| Camera Functions (3rd Camera) | - | Macro camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 13 Megapixel | Xiaomi Redmi Note 12 has better front camera resolution than OPPO A57s. |
| Sensor Size (Front) | 1/1.4" | 1/3.0" | Xiaomi Redmi Note 12 has better front camera sensor size than OPPO A57s. |
| Sensor Name (Front) | Omnivision OV08D10 sensor | - | |
| Lens Aperture (Front) | F/2.0 | F/2.45 | OPPO A57s has better front lens aperture than OPPO A57s. |
| Lens Element Qty (Front) | 5-element | 5-element | |
| Field of View (Front) | 79 degree(s) | - | |
| Pixel Size (Front) | 1.12 μm | - | |
| Focus Adjustment | Focus free | - | |
| Min Focal Length (Front) | 26 mm | - | |
| Special Effects (Front) | Stickers | - | |
| Camera Modes (Front) | 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 |
| BATTERY AND CHARGING | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 5000 mAh | Both phones have the same battery capacity. |
|---|---|---|---|
| Fast Charging Technology | SuperVOOC Flash Charge technology | Mi-FC fast charging technology | Both phones have fast charging technology. |
| Standby Time | 304 hours | - | |
| Talk Time | 1800 minutes | 1860 minutes | Xiaomi Redmi Note 12 has longer battery life when making calls than OPPO A57s. |
| 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 |
Talk: up to 1860 min Gaming: up to 9 hrs Playback (video): up to 21 hrs |
| CELLULAR | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| 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) | Android 13 | |
| User Interface | - | MIUI 14 | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, GLONASS, Galileo |
| COMMUNICATIONS | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Data Transmission | VoLTE, FDD-LTE, TDD-LTE, VoWiFi | 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 5, Band 8 | Band 1, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 850, 900 | 2100, 850, 900 | |
| 4G LTE Band | Band 1, Band 3, Band 5, Band 7, Band 8, Band 20, Band 28, Band 38, Band 40, Band 41 | 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 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 5.3 BLE | Bluetooth 5.0 | |
| NFC | Yes | - | OPPO A57s has NFC reader for mobile payments. |
| MEDIA | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Supported Digital Audio Standards | 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, FLV, AVI, MOV, ASF, 3GP, M4V, TS, M2TS, WebM, MP4 | - | |
| Sound Enhancements | Dirac sound technologies | - |
| FEATURES | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Sensors | Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, gyroscope | |
|---|---|---|---|
| Security Devices | Face recognition, fingerprint reader (side) | Face recognition, fingerprint reader (side) | |
| Security Technology | - | AI face unlock | |
| Additional Phone Features | 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 | Graphite cooling, IR blaster, coin vibration motor |
| OTHERS | OPPO A57s | Xiaomi Redmi Note 12 |
|---|
| Included Accessories | SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter | 33W charger | |
|---|---|---|---|
| Compliant Standards | IPX4 | IP53, SGS Eye Care Display Certification, SGS Seamless Pro 120Hz Certification, Netflix HD Certification |
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