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Oppo A7 vs Nokia C21

2G Network SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900   SIM1: GSM 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100   HSDPA 850 / 900 / 2100  
4G Network LTE   LTE  
Dimensions 155.9 x 75.4 x 8.1mm   169.9 x 77.9 x 8.8 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 168 g   195 g  
Display Type IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch  
Display Size 720 x 1520 Pixels (~271 PPI)   6.5 Inches   720 x 1600 Pixels (~269 PPI)  
Memory 64GB Built-in, 4GB RAM   32GB Built-in, 2GB RAM  
Card slot microSD Card, (supports upto 256GB)   microSDXC (dedicated slot)  
GPRS Yes Yes
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot   Wi-Fi 802.11 b/g/n, hotspot  
BlueTooth v4.2 with A2DP, LE   v4.2 with A2DP  
USB microUSB 2.0, USB On-The-Go   microUSB 2.0  
NFC No   No  
GPS Yes + A-GPS support, & GLONASS, BDS, GALILEO   Yes + A-GPS support  
Main Camera Geo-tagging, Phase detection, touch focus, Panorama, HDR, Video   8 MP, LED Flash   HDR, touch focus, Video (720p@30fps)  
Front Camera 16 MP, f/2.0, HDR   5 MP, LED Flash, Video 720p  
OS Android V8.1 Oreo   Android 11.0 (Go edition)  
Chipset Qualcomm SDM450 Snapdragon 450 (14 nm)   Unisoc SC9863A (28nm)  
Processor 1.8 GHz Octa-Core Cortex-A53   Octa-core (4 x 1.6 GHz Cortex-A55 + 4 x 1.2 GHz Cortex-A55)  
GPU Adreno 506   IMG8322  
Sensors Accelerometer, Compass, Fingerprint (rear mounted) , Gyro, Proximity   Accelerometer, Fingerprint (rear mounted), Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP3/AAC+/WAV/Flac player, MP4/H.264 player, Speaker Phone   3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/WMA player, Speaker Phone  
Colors Glazing Blue, Dazzling Gold, Rose Pink   Dark Blue, Warm Gray  
Battery (Li-ion Non removable), 4230 mAh   (Li-ion Removable), 3000 mAh  
Misc Active noise cancellation with dedicated mic, Photo/video editor, Document viewer   SMS(threaded view), MMS, Email, Push Mail, IM   Document viewer/editor, Photo/video editor