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Vivo Y21t 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 / 2100   HSDPA 850 / 900 / 1900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 8(900), 28(700), 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 164.26 x 76.08 x 8.0mm   158.3 x 75.3 x 8.4 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Dual Standby (Nano-SIM)  
Weight 182 g   190 g  
Display Type 60Hz   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch  
Display Size 720 x 1600 Pixels (~270 PPI)   1080 x 2340 Pixels (~409 PPI)  
Memory 128GB Built-in, 4GB RAM (+2GB virtual RAM)   64GB Built-in, 4GB RAM  
Card slot microSD Card, (supports up to 1TB)   microSD Card, (supports up to 256GB) (uses SIM 2 slot)  
GPRS Yes 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/ac, dual-band, Wi-Fi Direct, hotspot  
BlueTooth v5.0 with A2DP, LE   v5.0 with A2DP, LE  
USB USB Type-C 2.0, USB On-The-Go   2.0, Type-C 1.0 reversible connector, USB On-The-Go  
NFC Yes   No  
GPS Yes + AGPS, GLONASS, BDS, GALILEO   Yes + A-GPS support & Glonass, BDS  
Main Camera Geo-tagging, Phase detection, Panorama, HDR, Video ([email protected])   Geo-tagging, Phase detection, touch focus, HDR, Panorama, Video ([email protected], [email protected]/60/120fps, [email protected], gyro-EIS)  
Front Camera 8 MP, f/2.0, HDR, Video ([email protected])   13 MP, HDR, panorama, Video ([email protected])  
OS Android 11 OS   Android 9.0 (Pie)  
Chipset Qualcomm SM6225 Snapdragon 680 4G (6 nm)   Qualcomm SDM665 Snapdragon 665 (11 nm)  
Processor 2.4Ghz Octa Core   Octa-core (4 x 2.0 GHz Kryo 260 Gold + 4 x 1.8 GHz Kryo 260 Silver)  
GPU Adreno 610   Adreno 610  
Sensors Accelerometer, Compass, Fingerprint (side mounted), Proximity   Accelerometer, Compass, Fingerprint (rear mounted), Gyro, Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone   3.5mm Audio Jack, XviD/MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Speaker Phone  
Colors Midnight Blue, Pearl White   Crystal Green, Crystal Blue  
Battery - Fast charging 18W   - Fast battery charging 18W  
Misc Active noise cancellation with dedicated mic, Document viewer, Photo/video editor   Active noise cancellation with dedicated mic, Photo/video editor, Document viewer