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Nokia 3.1 vs Oppo A57

2G Network SIM1: SIM1 GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100   HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 28(700), 38(2600), 40(2300)   LTE band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)  
Dimensions 146.3 x 68.7 x 8.7 mm   163.7 x 75 x 8 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 138 g   187 g  
Display Type IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   60Hz  
Display Size 720 x 1440 Pixels (~310 PPI)   6.53 Inches   720 x 1612 Pixels (~270 PPI)  
Protection Corning Gorilla Galss (unspecified version)  
Memory 64GB Built-in, 3GB RAM  
Card slot microSD Card, (supports up to 256GB)   microSDXC  
GPRS Yes Yes
EDGE Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot  
BlueTooth v4.2 with A2DP, LE   v5.0 with A2DP, LE  
USB microUSB 2.0, USB On-The-Go   USB-C port  
NFC Yes   No  
GPS Yes + A-GPS support, & GLONASS   Yes + A-GPS support  
Main Camera Sensors Dual 13 MP, f/2.2, 26mm (wide), 1/3.06", AF + 2 MP, f/2.4, (depth), LED Flash   Geo-tagging, touch focus, face detection, HDR, panorama, Video (1080p@30fps)  
Front Camera 8 MP (f/2.0)   8 MP, f/2.0, (wide), HDR, Video (1080p@30fps)  
OS Android 11 OS  
Chipset Mediatek MT6750   MediaTek MT6765G Helio G35 (12 nm)  
Processor Octa-core (4 x 2.3 GHz Cortex-A53 + 4 x 1.8 GHz Cortex-A53)  
GPU Mali-T860MP2   PowerVR GE8320  
Sensors Accelerometer, Compass, FingerPrint, Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone   3.5mm Audio Jack, MP4/H.264/FLAC player, MP3/eAAC+/WAV player, Speaker Phone  
Colors Blue/Copper, Black/Chrome, White/Iron   Glowing Green, Glowing Black  
Battery Capacity (Li-Po Non removable), 5000 mAh   - Fast charging 33W, 50% in 30 min (advertised)  
Misc Photo/video editor, Document viewer   SMS (threaded view), MMS, Email, Push Email   IPX4 water resistant, IP5X dust resistant ,Glass front, Plastic frame, Plastic back, Document viewer, Photo/video editor