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Xiaomi Redmi 4 vs Nokia G21

2G Network SIM1: GSM 900 / 1800 / 1900 SIM2: GSM 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - LATAM  
4G Network LTE LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300), 41(2500)  
Dimensions N/a 164.6 x 75.9 x 8.5 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight N/a 190 g  
Display Type IPS capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch  
Display Size 5.0 inches, 1080 x 1920 pixels 6.5 Inches   720 x 1600 Pixels (~269 PPI)  
Multitouch Yes
Memory 32GB built-in 64GB Built-in, 4GB RAM  
Card slot microSDXC (dedicated slot)  
RAM 3GB RAM MicroSD card
GPRS Yes Yes
EDGE Yes
WLAN WLAN (Wi-Fi 802.11 a/b/g/n/ac Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot  
BlueTooth Bluetooth v4.1 with A2DP v5.0 with A2DP, LE  
USB USB (Type-C 1.0 reversible connectoro) USB Type-C 2.0, USB On-The-Go  
NFC Yes  
GPS Yes Yes + A-GPS support & Glonass, BDS  
Main Camera Yes Triple Camera: 50 MP, (wide), PDAF + 2 MP, (macro) + 2 MP, (depth), LED Flash   Phase detection, Geo-tagging, touch focus, face detection, panorama, HDR, Video (1080p@30fps)  
Front Camera 8 MP, (wide), Video (1080p@30fps)  
OS Android OS V6.0 (Marshmallow) Android 11 OS  
Chipset Unisoc T606  
Processor 2 GHZ Octa-Core, Snapdragon 625 chipset 1.6 Ghz Octa Core  
GPU ARM Mali G57  
Sensors Accelerometer, gyro, proximity, compass, fingerprint Accelerometer, Fingerprint (side mounted), Proximity  
Browser HTML5 HTML5  
Sound FM radio (not yet confirmed), 3.5mm audio jack, MP4/H.265 player, MP3/WAV/eAAC+/Flac player, YouTube, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, Speaker Phone  
Colors VArious Nordic Blue, Dusk  
Battery 4100 mAh (Li-Po Non removable), 5050 mAh   - Fast charging 18W  
Misc GPS + A-GPS support & GLONASS, BDS, Dual SIM + Nano-SIM, dual stand-by), Active noise cancellation with dedicated mic, Photo/video editor, Document viewer, Google Search, Maps, Gmail, Document viewer, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Document viewer/editor, Photo/video editor