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Oppo Oppo F21 Pro 5G vs Xiaomi Redmi Note 8

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 / 2100   HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)   LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)  
5G Network SA/NSA  
Dimensions 159.9 x 73.2 x 7.5 mm   158.3 x 75.3 x 8.4 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 173 g   190 g  
Display Type 430 nits (typ), 600 nits (HBM)   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch  
Display Size 1080 x 2400 Pixels (~409 PPI)   1080 x 2340 Pixels (~409 PPI)  
Protection Schott Xensation glass  
Memory 128GB Built-in, 8GB RAM, UFS 2.2   64GB Built-in, 4GB RAM  
Card slot microSDXC   microSD Card, (supports up to 256GB) (uses SIM 2 slot)  
GPRS Yes 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, dual-band, Wi-Fi Direct, hotspot  
BlueTooth v5.1 with A2DP, LE, apt-X HD   v5.0 with A2DP, LE  
USB USB Type-C 2.0, USB On-The-Go   2.0, Type-C 1.0 reversible connector, USB On-The-Go  
NFC No   No  
GPS Yes + A-GPS support, & GLONASS, GALILEO, QZSS   Yes + A-GPS support & Glonass, BDS  
Main Camera Phase detection, Geo-tagging, touch focus, face detection, HDR, panorama, Video ([email protected], gyro-EIS)   Geo-tagging, Phase detection, touch focus, HDR, Panorama, Video ([email protected], [email protected]/60/120fps, [email protected], gyro-EIS)  
Front Camera 16 MP, f/2.4, 27mm (wide), HDR, panorama, Video ([email protected])   13 MP, HDR, panorama, Video ([email protected])  
OS Android 12 OS   Android 9.0 (Pie)  
Chipset Qualcomm SM6375 Snapdragon 695 5G (6 nm)   Qualcomm SDM665 Snapdragon 665 (11 nm)  
Processor Octa-core (2 x 2.2 GHz Kryo 660 Gold + 6 x 1.7 GHz Kryo 660 Silver)   Octa-core (4 x 2.0 GHz Kryo 260 Gold + 4 x 1.8 GHz Kryo 260 Silver)  
GPU Adreno 619   Adreno 610  
Sensors Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity   Accelerometer, Compass, Fingerprint (rear mounted), Gyro, Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP4/H.264/FLAC player, MP3/eAAC+/WAV player, Speaker Phone   3.5mm Audio Jack, XviD/MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone  
Colors Rainbow Spectrum, Cosmic Black   Crystal Green, Crystal Blue  
Battery - Fast charging 33W, 31% in 15 min, 100% in 63 min (advertised), Reverse charging, USB Power Delivery   - Fast battery charging 18W  
Misc RGB ring lights around the cameras (notifications, charging progress), IPX4, dust and water resistant, Document editor, Photo/video editor   Active noise cancellation with dedicated mic, Photo/video editor, Document viewer