Detailed comparison and review of Xiaomi Redmi Note 7 and OPPO A57s. With our comprehensive overview, you can simply compare sizes, functions, but also other key features of both phones and easily decide which one is the right choice for you. Our goal is to help you identify the main differences between products and find the phone that best fits your needs and expectations.
DESIGN AND DIMENSIONS | Xiaomi Redmi Note 7 | OPPO A57s |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | - | CPH2385 | |
Form Factor | Touch | Touch | |
Height | 159.21 mm | 163.74 mm | OPPO A57s has greater height than Xiaomi Redmi Note 7. |
Width | 75.21 mm | 75.03 mm | Xiaomi Redmi Note 7 has greater width than OPPO A57s. |
Depth | 8.1 mm | 7.99 mm | OPPO A57s is narrower than Xiaomi Redmi Note 7. |
Weight | 186 g | 187 g | Xiaomi Redmi Note 7 is lighter than Xiaomi Redmi Note 7. |
Body Colour | Space black | Neptune blue | Starry black | |
Body Material | - | Composite polymer | |
Waterproof (Water-resistant) | - | - | OPPO A57s is waterproof. |
IP rating | - | IPX4 | |
SAR Value | 1.274 W/kg (body), 0.591 W/kg (head), 2.885 W/kg (limb) | 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 |
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SIM Card Type (Size) | Nano SIM | Nano SIM | |
SIM Card Qty | Dual-SIM | Dual-SIM | |
SIM Card Configuration Details | Nano SIM + nano SIM/microSD | Nano SIM + nano SIM/microSD |
DISPLAY | Xiaomi Redmi Note 7 | OPPO A57s |
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Display Type | LCD display | LCD display | |
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Display Technology | - | LCD | |
Screen Size (Display Size) | 6.3" | 6.56" | OPPO A57s has larger screen size than Xiaomi Redmi Note 7. |
Screen Resolution (Display Resolution) | 2340 x 1080 pixels | 1612 x 720 pixels | Xiaomi Redmi Note 7 has better screen resolution than OPPO A57s. |
Display Format | Full HD+ | HD+ | |
Pixel Density | 409 ppi | 269 ppi | Xiaomi Redmi Note 7 has better pixel density than OPPO A57s. |
Aspect Ratio | 19:9 | 20.1:9 | |
Max Brightness | 500 cd/m² | 600 cd/m² | OPPO A57s has better display brightness than Xiaomi Redmi Note 7. |
Colour Depth | - | 16.7 million colours | |
Contrast Ratio | 1500:1 | 1500:1 | Both phones have the same display contrast ratio. |
Display Enhancement Technology | Sunlight mode | - | |
Display Refresh Rate | - | 60 Hz | |
Touch Sampling Rate | - | 60 Hz | |
Display Features | Night Display, Reading mode, Colour temperature adjustment, 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 Redmi Note 7 | OPPO A57s |
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Processor Type (CPU) | Qualcomm Snapdragon 660 AIE | MediaTek Helio G35 | |
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Clock Speed | 2.2 GHz | 2.3 GHz | OPPO A57s has higher clock speed than Xiaomi Redmi Note 7. |
Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
64-bit Architecture | Yes | - | Xiaomi Redmi Note 7 has 64-bit architecture. |
Graphics System (GPU) | Qualcomm ADRENO 512 | IMG GE8320 |
MEMORY | Xiaomi Redmi Note 7 | OPPO A57s |
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RAM | LPDDR4X SDRAM - 3 GB | LPDDR4X SDRAM - 4 GB | OPPO A57s has more RAM than Xiaomi Redmi Note 7. |
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Internal Memory Size (Storage Capacity) | 32 GB | 128 GB | OPPO A57s has more internal memory than Xiaomi Redmi Note 7. |
Memory Interface | - | eMMC 5.1 | |
Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSDXC - up to 256 GB | microSDHC, microSD, microSDXC - up to 1 TB |
CAMERA | Xiaomi Redmi Note 7 | OPPO A57s |
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MAIN CAMERA |
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Number of Main Cameras | 2 | 2 | |
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Sensor Resolution | 48 Megapixel | 50 Megapixel | OPPO A57s has better camera resolution than Xiaomi Redmi Note 7. |
Sensor Size | - | 1/2.76" | |
Sensor Name | - | Samsung S5KJN1 | |
Lens Aperture | F/1.8 | F/1.8 | Both phones have the same camera lens aperture. |
Lens Construction | - | 5-element | |
Field of View (FoV) | - | 77 degree(s) | |
Pixel Size | 1.6 μm | 0.64 μm | Xiaomi Redmi Note 7 has larger camera pixel size than OPPO A57s. |
Focus Adjustment | Automatic | Automatic | |
Minimum Focal Length (Focal Distance) | - | 27 mm | |
Digital Zoom | - | 5x | |
Special Effects | HDR, low light enhancement | Stickers | |
HDR Mode | Auto HDR mode | - | |
Camera Modes | Burst mode, Panorama, AI portrait mode | Panorama, Time-lapse mode, Pro mode, Portrait, Night | |
Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 7 has face detection. |
Light Source | LED 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 120 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
Camera Features (Functions) | Phase Detect Auto-Focus (PDAF), EIS video stabilisation, AI Dual camera, 4-in-1 Super Pixel, AI scene detection, 27 different scenes, AI portrait mode with background blurring | - |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 5 Megapixel | 2 Megapixel | Xiaomi Redmi Note 7 has better second camera resolution than OPPO A57s. |
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Sensor Size (2nd Camera) | - | 1/5" | |
Lens Aperture (2nd Camera) | - | F/2.4 | |
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 |
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Number of Front Cameras | 1 | 1 | |
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Sensor Resolution (Front) | 13 Megapixel | 8 Megapixel | Xiaomi Redmi Note 7 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 | |
Lens Element Qty (Front) | - | 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) | HDR | Stickers | |
Camera Modes (Front) | AI portrait mode, AI Beautify | Panorama, Time-lapse mode, Portrait | |
Face Recognition (Face ID) | Face recognition | - | Xiaomi Redmi Note 7 has face detection. |
Video Resolutions (Front) | - | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
Camera Features (Front) | Self-timer, AI background bluring, AI scene detection, 12 different scenes | - |
BATTERY AND CHARGING | Xiaomi Redmi Note 7 | OPPO A57s |
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Battery Capacity (Battery Size) | 4000 mAh | 5000 mAh | OPPO A57s has larger battery capacity than Xiaomi Redmi Note 7. |
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Fast Charging Technology | Qualcomm Quick Charge 4.0 | SuperVOOC Flash Charge technology | Both phones have fast charging technology. |
Standby Time | 251 hours | 304 hours | OPPO A57s has longer standby time than Xiaomi Redmi Note 7. |
Talk Time | 1380 minutes | 1800 minutes | OPPO A57s has longer battery life when making calls than Xiaomi Redmi Note 7. |
Run Time Details | Talk: up to 1380 min Standby: up to 251 hrs Playback (video): up to 13 hrs Gaming: up to 7 hrs |
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 Redmi Note 7 | OPPO A57s |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
Operating System | Android 9.0 Pie | ColorOS 12.1 (based on Android 12) | |
User Interface | MIUI 10 | - | |
Navigation | GPS, A-GPS, GLONASS, BeiDou | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
COMMUNICATIONS | Xiaomi Redmi Note 7 | OPPO A57s |
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Data Transmission | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | VoLTE, FDD-LTE, TDD-LTE, VoWiFi | |
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2G Band | 850 GSM, 900 GSM, 1900 GSM, 2100 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 Redmi Note 7 | OPPO A57s |
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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 | |
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Supported Digital Video Standards | MKV, XviD, MPEG-4, H.264, M4V, ASP | MKV, FLV, AVI, MOV, ASF, 3GP, M4V, TS, M2TS, WebM, MP4 | |
Sound Enhancements | - | Dirac sound technologies |
FEATURES | Xiaomi Redmi Note 7 | OPPO A57s |
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Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | - | |
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Sensors | Accelerometer, ambient light sensor, digital compass, gyro sensor, distance sensor, vibration sensor | Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor | |
Security Devices | Fingerprint reader | Face recognition, fingerprint reader (side) | |
Additional Phone Features | Infrared remote control, Dual microphones | 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 Redmi Note 7 | OPPO A57s |
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Included Accessories | USB cable, power adapter, SIM card removal tool, transparent soft case | SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter | |
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Compliant Standards | - | IPX4 |