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Oppo A31 3GB vs Xiaomi Redmi A2 Plus

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 / 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), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 163.9 x 75.5 x 8.3 mm   164.9 x 76.8 x 9.1 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 180 g   192 g  
Display Type 480 nits typ. brightness   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   400 nits (typ)  
Display Size 720 x 1600 Pixels (~270 PPI)   6.5 Inches   720 x 1600 Pixels (~269 PPI)  
Protection Corning Gorilla Glass 5  
Memory 32GB Built-in, 3GB RAM   64GB Built-in, 3GB RAM  
Card slot microSDXC (dedicated slot)   microSDXC (dedicated)  
GPRS Yes 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  
BlueTooth v5.0 with A2DP, LE   v5.0 with A2DP, LE  
USB microUSB 2.0, USB On-The-Go   microUSB 2.0  
NFC No   No  
GPS Yes + A-GPS support, BDS   Yes + GPS, GLONASS, GALILEO, BDS  
Main Camera Phase detection, Geo-tagging, touch focus, face detection, HDR, panorama, Video ([email protected])   Dual Camera: 8 MP, f/2.0, (wide) + 0.08 MP (depth), Dual LED Flash   Phase detection, geo-tagging, touch focus, face detection, Video (1080p@30fps)  
Front Camera 8 MP, f/2.0, HDR, Video ([email protected])   5 MP, f/2.2, Video (1080p@30fps)  
OS Android 9.0 (Pie)   Android 12 Go edition  
Chipset Mediatek MT6765V/CB Helio P35 (12nm)   Mediatek Helio G36 (12 nm)  
Processor Octa-core (4 x 2.3 GHz Cortex-A53 + 4 x 1.8 GHz Cortex-A53)   Octa-core (4 x 2.2 GHz Cortex-A53 + 4 x 1.7 GHz Cortex-A53)  
GPU PowerVR GE8320   PowerVR GE8320  
Sensors Accelerometer, Compass, Fingerprint (rear mounted), Gyro, Proximity   Accelerometer, Fingerprint (rear-mounted)  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP4/H.264/FLAC player, MP3/eAAC+/WAV player, Speaker Phone   3.5mm Audio Jack, 24-bit/192kHz audio, Speaker Phone  
Colors Fantasy White, Mystery Black   Light Green, Light Blue, Black  
Battery (Li-Po Non removable), 4230 mAh   (Li-ion Non removable), 5000 mAh   - Fast battery charging  
Misc Active noise cancellation with dedicated mic, Document editor, Photo/video editor   SMS(threaded view), MMS, Email, Push Mail, IM   Photo/video editor, Document viewer