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Samsung Galaxy A21s 128GB vs Oppo Reno 15 Pro

2G Network SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900   SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100   HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE   LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
5G Network SA/NSA  
Dimensions 163.7 x 75.3 x 8.9 mm   151.2 x 72.4 x 8.0 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Nano-SIM + Nano-SIM + eSIM (max 2 at a time)  
Weight 192 g   187 g  
Display Type PLS TFT Capacitive touchscreen, 16M Colors, Multitouch   AMOLED Capacitive Touchscreen, 1B Colors   120Hz, HDR10+, 600 nits (typ), 1800 nits (HBM)  
Display Size 720 x 1600 Pixels (~270 PPI)   6.32 Inches   1216 x 2640 Pixels (~460 PPI)  
Protection Corning Gorilla Glass 7i  
Memory 128GB Built-in, 4GB RAM   256GB Built-in, 12GB RAM, UFS 3.1  
Card slot microSD card (supports up to 512GB) (dedicated slot)   No  
GPRS Yes
EDGE Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot   Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band  
BlueTooth v5.0 with A2DP, LE   v5.4 with A2DP, LE, aptX HD, LHDC 5  
USB 2.0, Type-C 1.0 reversible connector   USB Type-C 2.0, OTG  
NFC Yes   Yes  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO   Yes + GPS, GLONASS, GALILEO, BDS, QZSS  
Main Camera Geo-tagging, touch focus, face detection, panorama, HDR, Video ([email protected])   Triple Camera: 200 MP, f/1.8, 24mm (wide), 1/1.56", PDAF, OIS + 50 MP, f/2.8, 85mm (telephoto), PDAF, OIS, 3.5x optical zoom + 50 MP, f/2.0, 16mm, (ultrawide), AF, LED Flash   Color spectrum sensor, HDR, panorama, Video (4K@30/60fps, 1080p@30/60/120/240/480fps, gyro-EIS, HDR, OIS)  
Front Camera 13 MP, f/2.2, (wide), 1/3.1, Video ([email protected])   50 MP, f/2.0, 18mm, (ultrawide), AF, Panorama, HDR, Video (4K@30/60fps, 1080p@30/60fps, gyro-EIS, HDR)  
OS Android 10.0 OS   Android 16 OS  
Chipset Exynos 850 (8nm)   Mediatek Dimensity 8450 (4 nm)  
Processor Octa-core (4 x 2.0 GHz Cortex-A55 + 4 x 2.0 GHz Cortex-A55)   Octa-core (1 x 3.25 GHz Cortex-A725 + 3 x 3.0 GHz Cortex-A725 + 4 x 2.1 GHz Cortex-A725)  
GPU Mali-G52   Mali-G720 MC7  
Sensors Accelerometer, Fingerprint (rear mounted), Gyro, Proximity   Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity, BeaconLink calls via bluetooth, up to 200m  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker Phone   24-bit/192kHz audio, Speaker  Phone  
Colors Black, White, Blue, Red   Dusk Brown, Aurora Blue  
Battery - Fast battery charging 15W   6200 mAh   - Fast battery 80W wired, 13.5W PD, 55W PPS, 100% in 53 min, Reverse wired  
Misc Active noise cancellation with dedicated mic, ANT+ support, Photo/video editor, Document viewer   SMS(threaded view), MMS, Email, Push Mail, IM   Glass front + Gorilla Glass 7i), aluminum frame, glass back, IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)