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Vivo Y51 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 / 2100   HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 5(850), 8(900), 40(2300)   LTE  
Dimensions 159.25 x 75.19 x 8.68 mm   169.9 x 77.9 x 8.8 mm  
Sim Type Hybrid Dual SIM, Dual Standby, (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 186 g   195 g  
Display Type Super AMOLED Capacitive Touchscreen, 16M Colors, Multitouch   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch  
Display Size 1080 x 2340 Pixels (~403 PPI)   6.5 Inches   720 x 1600 Pixels (~269 PPI)  
Memory 128GB Built-in, 4GB RAM   32GB Built-in, 2GB RAM  
Card slot microSDXC (dedicated slot)   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 v5.0 with A2DP   v4.2 with A2DP  
USB USB Type-C 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, Panorama, HDR, Video ([email protected], [email protected]; gyro-EIS)   8 MP, LED Flash   HDR, touch focus, Video (720p@30fps)  
Front Camera 16 MP, f/2.0, (wide), 1/3.06   5 MP, LED Flash, Video 720p  
OS Android 10 OS   Android 11.0 (Go edition)  
Chipset Qualcomm SDM665 Snapdragon 665 (11 nm)   Unisoc SC9863A (28nm)  
Processor Octa-core (4 x 2.0 GHz Kryo 260 Gold + 4 x 1.8 GHz Kryo 260 Silver)   Octa-core (4 x 1.6 GHz Cortex-A55 + 4 x 1.2 GHz Cortex-A55)  
GPU Adreno 610   IMG8322  
Sensors Accelerometer, Compass, Fingerprint (under display, optical), Gyro, Proximity   Accelerometer, Fingerprint (rear mounted), 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 player, MP3/WAV/eAAC+/WMA player, Speaker Phone  
Colors Mystic Black, Jazzy Blue, Dreamy White   Dark Blue, Warm Gray  
Battery - Fast battery charging 18W   (Li-ion Removable), 3000 mAh  
Misc Active noise cancellation with dedicated mic, Document viewer, Photo/video editor   SMS(threaded view), MMS, Email, Push Mail, IM   Document viewer/editor, Photo/video editor