In depth comparison and review of OPPO Reno4 5G 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 | OPPO Reno4 5G | OPPO A57s |
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Product Type | Smartphone | Smartphone | |
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Manufacturer Model Number | CPH2091 | CPH2385 | |
Form Factor | Touch | Touch | |
Height | 159.3 mm | 163.74 mm | OPPO A57s has greater height than OPPO Reno4 5G. |
Width | 74 mm | 75.03 mm | OPPO A57s has greater width than OPPO Reno4 5G. |
Depth | 7.8 mm | 7.99 mm | OPPO Reno4 5G is narrower than OPPO Reno4 5G. |
Weight | 183 g | 187 g | OPPO Reno4 5G is lighter than OPPO Reno4 5G. |
Body Colour | Space black | Galactic blue | Starry black | |
Body Material | - | Composite polymer | |
Waterproof (Water-resistant) | - | - | OPPO A57s is waterproof. |
IP rating | IP54 | IPX4 | |
SAR Value | 0.886 W/kg (head), 1.155 W/kg (body), 2.165 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 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 |
DISPLAY | OPPO Reno4 5G | OPPO A57s |
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Display Type | OLED display | LCD display | |
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Display Technology | AMOLED | LCD | |
Screen Size (Display Size) | 6.4" | 6.56" | OPPO A57s has larger screen size than OPPO Reno4 5G. |
Screen Resolution (Display Resolution) | 2400 x 1080 pixels | 1612 x 720 pixels | OPPO Reno4 5G has better screen resolution than OPPO A57s. |
Display Format | Full HD+ | HD+ | |
Pixel Density | 409 ppi | 269 ppi | OPPO Reno4 5G has better pixel density than OPPO A57s. |
Aspect Ratio | 20:9 | 20.1:9 | |
Max Brightness | 800 cd/m² | 600 cd/m² | OPPO Reno4 5G has better display brightness than OPPO A57s. |
Colour Depth | 16.7 million colours | 16.7 million colours | Both phones have the same color depth. |
Contrast Ratio | 800000:1 | 1500:1 | OPPO Reno4 5G has better display contrast ratio than OPPO A57s. |
Display Refresh Rate | 60 Hz | 60 Hz | Both phones have the same refresh rate. |
Touch Sampling Rate | - | 60 Hz | |
Display Features | DCI-P3 Wide colour gamut, Dark mode, 180Hz sampling rate | Night mode, Eye comfort mode, 96% NTSC | |
Display Protection (Screen Protector) | Corning Gorilla Glass (scratch resistant glass) | Panda Glass MN228 |
PROCESSOR | OPPO Reno4 5G | OPPO A57s |
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Processor Type (CPU) | Qualcomm Snapdragon 765G | MediaTek Helio G35 | |
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Clock Speed | 2.4 GHz | 2.3 GHz | OPPO Reno4 5G 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) | Qualcomm ADRENO 620 | IMG GE8320 |
MEMORY | OPPO Reno4 5G | OPPO A57s |
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RAM | LPDDR4X SDRAM - 8 GB | LPDDR4X SDRAM - 4 GB | OPPO Reno4 5G has more RAM than OPPO A57s. |
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Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
Memory Interface | UFS 2.1 | eMMC 5.1 | |
Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSD, microSDXC - up to 1 TB |
CAMERA | OPPO Reno4 5G | OPPO A57s |
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MAIN CAMERA |
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Number of Main Cameras | 3 | 2 | |
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Sensor Resolution | 48 Megapixel | 50 Megapixel | OPPO A57s has better camera resolution than OPPO Reno4 5G. |
Sensor Size | 1/2" | 1/2.76" | OPPO A57s has better camera sensor size than OPPO Reno4 5G. |
Sensor Name | Sony Exmor RS IMX586 sensor | Samsung S5KJN1 | |
Lens Aperture | F/1.7 | F/1.8 | OPPO Reno4 5G has better lens aperture than OPPO Reno4 5G. |
Lens Construction | 6-element | 5-element | |
Field of View (FoV) | - | 77 degree(s) | |
Pixel Size | 0.8 μm | 0.64 μm | OPPO Reno4 5G has larger camera pixel size than OPPO A57s. |
Focus Adjustment | Automatic | Automatic | |
Laser Auto Focus | Yes | - | |
Minimum Focal Length (Focal Distance) | 26 mm | 27 mm | |
Digital Zoom | - | 5x | |
Special Effects | HDR, Bokeh effect | Stickers | |
Camera Modes | Time-lapse mode, night mode, Expert Mode, Text, AI Beautify, AI Portait, Pano mode, Dazzle Colour Mode | Panorama, Time-lapse mode, Pro mode, Portrait, Night | |
Light Source | LED flash | LED flash | |
Still Image Resolutions | 8000 x 6000 | - | |
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, 1280 x 720 (720p) at 60 fps | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | |
Camera Features (Functions) | Noise reduction, Phase Detect Auto-Focus (PDAF), Electronic Image Stabiliser (EIS), Closed loop processing, 4-in-1 Pixel technology, Ultra Steady Video, contrast detection auto-focus (CDAF), laser detection auto focus (LDAF) | - |
SECOND CAMERA |
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Sensor Resolution (2nd Camera) | 8 Megapixel | 2 Megapixel | OPPO Reno4 5G has better second camera resolution than OPPO A57s. |
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Sensor Size (2nd Camera) | - | 1/5" | |
Lens Type (2nd Camera) | Ultra wide-angle lens | - | |
Lens Aperture (2nd Camera) | F/2.2 | F/2.4 | OPPO Reno4 5G has better second camera lens aperture than OPPO Reno4 5G. |
Lens Element Qty (2nd Camera) | 5-element | 3-element | |
Field of View (2nd Camera) | 119 degree(s) | 89 degree(s) | OPPO Reno4 5G has larger second camera lens field of view than OPPO A57s. |
Pixel Size (2nd Camera) | - | 1.75 μm | |
Minimum Focal Length (2nd Camera) | 16 mm | 21 mm | |
Camera Functions (2nd Camera) | Monochrome | Monochrome | |
Camera Modes (2nd Camera) | Ultra Night Mode 3.0 | - | |
Camera Features (2nd Camera) | 5-piece lens, Ultra Steady Video Pro | - |
THIRD CAMERA |
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Sensor Resolution (3rd Camera) | 2 Megapixel | - | |
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Lens Aperture (3rd Camera) | F/2.4 | - | |
Lens Element Qty (3rd Camera) | 3-element | - |
FRONT CAMERA |
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Number of Front Cameras | 2 | 1 | |
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Sensor Resolution (Front) | 32 Megapixel | 8 Megapixel | OPPO Reno4 5G has better front camera resolution than OPPO A57s. |
Sensor Size (Front) | - | 1/1.4" | |
Sensor Name (Front) | Sony Exmor RS IMX616 sensor | Omnivision OV08D10 sensor | |
Lens Aperture (Front) | F/2.4 | F/2.0 | OPPO A57s has better front lens aperture than OPPO Reno4 5G. |
Lens Element Qty (Front) | 5-element | 5-element | |
Field of View (Front) | - | 79 degree(s) | |
Pixel Size (Front) | 0.8 μm | 1.12 μm | OPPO A57s has larger front camera pixel size than OPPO Reno4 5G. |
Focus Adjustment | - | Focus free | |
Min Focal Length (Front) | - | 26 mm | |
Special Effects (Front) | - | Stickers | |
Camera Modes (Front) | Panorama, Time-lapse mode, Slow motion mode, night mode, Expert Mode, AI Beauty, Portrait | Panorama, Time-lapse mode, Portrait | |
Light Source (Front) | Display flash | - | |
Still Image Resolutions (Front) | 6560 x 4928 | - | |
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) | Electronic Image Stabiliser (EIS), 5P lens | - |
SECOND FRONT CAMERA |
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Sensor Resolution (2nd Front) | 2 Megapixel | - | |
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Lens Aperture (2nd Front) | F/2.4 | - | |
Pixel Size (2nd Front) | 1.75 μm | - | |
Camera Functions (2nd Front) | Portait camera | - | |
Camera Features (2nd Front) | 3-piece lens | - |
BATTERY AND CHARGING | OPPO Reno4 5G | OPPO A57s |
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Battery Capacity (Battery Size) | 4020 mAh | 5000 mAh | OPPO A57s has larger battery capacity than OPPO Reno4 5G. |
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Fast Charging Technology | SuperVOOC 2.0 Flash Charge | SuperVOOC Flash Charge technology | Both phones have fast charging technology. |
Recharge Time (Charging Time) | 36 min | - | |
Standby Time | 390 hours | 304 hours | OPPO Reno4 5G has longer standby time than OPPO A57s. |
Talk Time | 1560 minutes | 1800 minutes | OPPO A57s has longer battery life when making calls than OPPO Reno4 5G. |
Run Time Details | Standby: up to 390 hrs Talk: up to 1560 min Playback (Music): up to 37 hrs Playback (video): up to 17.1 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 | OPPO Reno4 5G | OPPO A57s |
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Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
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Mobile Broadband Generation | 5G | 4G | OPPO Reno4 5G has more advanced generation mobile network. |
Operating System | ColorOS 7.2 (based on Android 10) | ColorOS 12.1 (based on Android 12) | |
Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS |
COMMUNICATIONS | OPPO Reno4 5G | OPPO A57s |
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Data Transmission | FDD-LTE, TDD-LTE, 5G NR FR1 | VoLTE, FDD-LTE, TDD-LTE, VoWiFi | |
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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 6, Band 8, Band 19 | Band 1, Band 5, Band 8 | |
3G UMTS Frequency | 2100, 1900, 1700, 850, 800, 900, 800 | 2100, 850, 900 | |
4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 17, Band 18, Band 19, Band 20, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 66 | 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 700a, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | FDD 2100, FDD 1800+, FDD 850, FDD 2600, FDD 900, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500 | |
5G NR Band | N1, n3, n5, n7, n8, n20, n28, n38, n41, n77, n78, n40 | - | |
5G NR Frequency | FDD 2100, FDD 1800, FDD 850, FDD 2600, FDD 900, FDD 800, FDD 700APT, TDD TD 2600, TDD TD 2500, TDD TD 3700, TDD TD 3500, TDD 2300 | - | |
Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
Bluetooth | Bluetooth 5.1 | Bluetooth 5.3 BLE | |
NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
MEDIA | OPPO Reno4 5G | OPPO A57s |
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Supported Digital Audio Standards | WAV, WMA, AAC, AMR, MP3, FLAC, OGG, APE (Monkey's Audio), apt-X, LDAC, MID, SBC, apt-X HD, APTX-TWS+ | 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, FLV, AVI, MOV, WMV, 3GP, MP4 | MKV, FLV, AVI, MOV, ASF, 3GP, M4V, TS, M2TS, WebM, MP4 | |
Sound Enhancements | Dolby Atmos sound technology | Dirac sound technologies |
FEATURES | OPPO Reno4 5G | 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, proximity sensor, pedometer, gyro sensor, geomagnetic sensor, gravity sensor | Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor | |
Security Devices | Fingerprint reader (under display) | Face recognition, fingerprint reader (side) | |
Additional Phone Features | MU-MIMO technology, Google Lens | 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 | OPPO Reno4 5G | OPPO A57s |
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Included Accessories | Headphones, power adapter, SIM card removal tool, USB-C cable, protective case | SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter | |
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Compliant Standards | IP54, TUV Rheinland Certified Safe Fast-Charge System | IPX4 |