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Samsung Galaxy A31 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 / 1900 / 2100   HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 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)  
Dimensions 159.3 x 73.1 x 8.6 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 185 g   190 g  
Display Type Super AMOLED Capacitive Touchscreen, 16M Colors, Multitouch   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch  
Display Size 1080 x 2400 Pixels (~411 PPI)   1080 x 2340 Pixels (~409 PPI)  
Memory 128GB Built-in, 4GB RAM   64GB Built-in, 4GB RAM  
Card slot microSD Card, (supports up to 512GB)   microSD Card, (supports up to 256GB) (uses SIM 2 slot)  
GPRS Yes Yes
EDGE Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot   Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot  
BlueTooth v5.0 with A2DP, LE   v5.0 with A2DP, LE  
USB 2.0, Type-C 1.0 reversible connector, USB On-The-Go   2.0, Type-C 1.0 reversible connector, USB On-The-Go  
NFC Yes   No  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO   Yes + A-GPS support & Glonass, BDS  
Main Camera Geo-tagging, touch focus, face detection, panorama, HDR, Video ([email protected], [email protected])   Geo-tagging, Phase detection, touch focus, HDR, Panorama, Video ([email protected], [email protected]/60/120fps, [email protected], gyro-EIS)  
Front Camera 20 MP, f/2.2, (wide), HDR, Video ([email protected])   13 MP, HDR, panorama, Video ([email protected])  
OS Android 10.0 OS   Android 9.0 (Pie)  
Chipset Helio P65 SoC   Qualcomm SDM665 Snapdragon 665 (11 nm)  
Processor 2Ghz Octa Core   Octa-core (4 x 2.0 GHz Kryo 260 Gold + 4 x 1.8 GHz Kryo 260 Silver)  
GPU 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, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker Phone   3.5mm Audio Jack, XviD/MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone  
Colors Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White   Crystal Green, Crystal Blue  
Battery - Fast battery charging 15W   - Fast battery charging 18W  
Misc Active noise cancellation with dedicated mic, Photo/video editor, Document viewer   Active noise cancellation with dedicated mic, Photo/video editor, Document viewer