Detailed comparison and review of OPPO A57s and Nokia XR21. 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 | OPPO A57s | Nokia XR21 |
|---|
| Product Type | Smartphone | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | CPH2385 | TA-1486 | |
| Form Factor | Touch | Touch - Rugged | |
| Height | 163.74 mm | 168 mm | Nokia XR21 has greater height than OPPO A57s. |
| Width | 75.03 mm | 78.58 mm | Nokia XR21 has greater width than OPPO A57s. |
| Depth | 7.99 mm | 10.45 mm | OPPO A57s is narrower than OPPO A57s. |
| Weight | 187 g | 231 g | OPPO A57s is lighter than OPPO A57s. |
| Body Colour | Starry black | Midnight black | Pine green | |
| Body Material | Composite polymer | Polycarbonate, thermoplastic polyurethane (TPU) | |
| Protection | - | Dustproof, drop-proof, water-resistant | |
| Waterproof (Water-resistant) | - | Yes | Nokia XR21 is waterproof. |
| IP rating | IPX4 | IP68, IP69K, IP69 | |
| SAR Value | 1.015 W/kg (body), 0.957 W/kg (head), 2.399 W/kg (limb) | 1.16 W/kg (body), 1.1 W/kg (head) | |
| Integrated Components | - | LED flashlight | |
| 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 | Nano SIM, Electronic SIM card (e-SIM) | |
| SIM Card Qty | Dual-SIM | Dual-SIM | |
| SIM Card Configuration Details | Nano SIM + nano SIM/microSD | - |
| DISPLAY | OPPO A57s | Nokia XR21 |
|---|
| Display Type | LCD display | - | |
|---|---|---|---|
| Display Technology | LCD | - | |
| Screen Size (Display Size) | 6.56" | 6.49" | OPPO A57s has larger screen size than Nokia XR21. |
| Screen Resolution (Display Resolution) | 1612 x 720 pixels | 2400 x 1080 pixels | Nokia XR21 has better screen resolution than OPPO A57s. |
| Display Format | HD+ | Full HD+ | |
| Pixel Density | 269 ppi | - | |
| Aspect Ratio | 20.1:9 | 20:9 | |
| Max Brightness | 600 cd/m² | 550 cd/m² | OPPO A57s has better display brightness than Nokia XR21. |
| Colour Depth | 16.7 million colours | - | |
| Contrast Ratio | 1500:1 | - | |
| Display Refresh Rate | 60 Hz | 120 Hz | Nokia XR21 has better refresh rate than OPPO A57s. |
| Touch Sampling Rate | 60 Hz | - | |
| Display Features | Night mode, Eye comfort mode, 96% NTSC | Glove & Wet Touch, 82% NTSC | |
| Display Protection (Screen Protector) | Panda Glass MN228 | Corning Gorilla Glass Victus (scratch resistant glass) |
| PROCESSOR | OPPO A57s | Nokia XR21 |
|---|
| Processor Type (CPU) | MediaTek Helio G35 | Qualcomm Snapdragon 695 5G | |
|---|---|---|---|
| Processor Number | - | SM6375 | |
| Clock Speed | 2.3 GHz | 2.2 GHz | OPPO A57s has higher clock speed than Nokia XR21. |
| Processor Core Qty | 8-core | 8-core | Both phones have the same number of phone cores. |
| Graphics System (GPU) | IMG GE8320 | Qualcomm ADRENO 619 |
| MEMORY | OPPO A57s | Nokia XR21 |
|---|
| RAM | LPDDR4X SDRAM - 4 GB | 6 GB | Nokia XR21 has more RAM than OPPO A57s. |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 128 GB | 128 GB | Both phones have the same internal memory capacity. |
| Memory Interface | eMMC 5.1 | - | |
| Supported Flash Memory Cards (Expandable Memory) | microSDHC, microSD, microSDXC - up to 1 TB | - |
| CAMERA | OPPO A57s | Nokia XR21 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 2 | 2 | |
|---|---|---|---|
| Sensor Resolution | 50 Megapixel | 64 Megapixel | Nokia XR21 has better camera resolution than OPPO A57s. |
| Sensor Size | 1/2.76" | - | |
| Sensor Name | Samsung S5KJN1 | - | |
| Lens Aperture | F/1.8 | - | |
| 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 | Stickers | - | |
| Camera Modes | Panorama, Time-lapse mode, Pro mode, Portrait, Night | AI Portait, Night Mode 2.0, SpeedWarp camera mode, Action Cam mode, flash shot mode | |
| Light Source | LED flash | Dual LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1280 x 720 (720p) at 30 fps | - | |
| Camera Features (Functions) | - | Corning Gorilla Glass DX+ (protective lens glass), UW Capture fusion |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | 2 Megapixel | 8 Megapixel | Nokia XR21 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/2.4 | - | |
| 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 |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 8 Megapixel | 16 Megapixel | Nokia XR21 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) | 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 | - |
| BATTERY AND CHARGING | OPPO A57s | Nokia XR21 |
|---|
| Battery Capacity (Battery Size) | 5000 mAh | 4800 mAh | OPPO A57s has larger battery capacity than Nokia XR21. |
|---|---|---|---|
| Fast Charging Technology | SuperVOOC Flash Charge technology | Qualcomm Quick Charge 3.0, Power Delivery 2.0 | 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 |
Mixed usage: up to 48 hrs |
| CELLULAR | OPPO A57s | Nokia XR21 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 5G | Nokia XR21 has more advanced generation mobile network. |
| Operating System | ColorOS 12.1 (based on Android 12) | Android 12 | |
| Navigation | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS | GPS, A-GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC, A-GLONASS |
| COMMUNICATIONS | OPPO A57s | Nokia XR21 |
|---|
| Data Transmission | VoLTE, FDD-LTE, TDD-LTE, VoWiFi | LTE, 5G NR | |
|---|---|---|---|
| 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 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | 2100, 850, 900 | 2100, 1900, 1700, 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 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 20, Band 25, Band 26, Band 28, Band 32, Band 38, Band 39, Band 40, Band 41, Band 42, Band 43, Band 48, Band 66, Band 71 | |
| 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 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 DD, FDD 1900+, FDD 850+, FDD 700 APT, FDD 1500 L, TDD 2600, TDD 1900, TDD 2300, TDD 2500, TDD 3500, TDD 3700, TDD 3600, FDD 1700 - 2110 AWS-3, FDD 600 | |
| 5G NR Band | - | N1, n2, n3, n5, n7, n20, n28, n41, n66, n71, n77, n78, n79, n40, n25 | |
| 5G NR Frequency | - | FDD 2100, FDD 1900PCS, FDD 1800, FDD 850, FDD 2600, FDD 800, FDD 700APT, TDD TD 2500, FDD AWS-3, FDD 600, TDD TD 3700, TDD TD 3500, TDD TD 4500, TDD 2300, FDD 1900 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac/ax | |
| Bluetooth | Bluetooth 5.3 BLE | Bluetooth 5.1 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Modem | - | Snapdragon X51 5G |
| MEDIA | OPPO A57s | Nokia XR21 |
|---|
| 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 | OZO Playback technology, OZO spatial sound recording with wind noise reduction, audio boost mode |
| FEATURES | OPPO A57s | Nokia XR21 |
|---|
| Sensors | Accelerometer, proximity sensor, magnetometer, gravity sensor, brightness sensor | Accelerometer, ambient light sensor, proximity sensor, digital compass, barometer, gyroscope | |
|---|---|---|---|
| Security Devices | Face recognition, fingerprint reader (side) | Face recognition, fingerprint reader (side) | |
| Security Technology | - | 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 | Dual microphones, 4 years of Security Updates, dual stereo speakers, 3 years of OS updates, SOS light signal function |
| OTHERS | OPPO A57s | Nokia XR21 |
|---|
| Included Accessories | SIM card removal tool, USB-C charging cable, protective film, SuperVOOC 33W power adapter | SIM card removal tool, USB-C cable | |
|---|---|---|---|
| Compliant Standards | IPX4 | IP68, IP69K, MIL-STD-810H | |
| Product Recycled Content | - | 100 % - aluminium inner chassis | |
| Max Height of Shock Resistance | - | 1.8 m |
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