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QMobile King Kong Max vs Vivo Y21d 8GB

2G Network SIM1: 850 / 900 / 1800 / 1900SIM2: 850 / 900 / 1800 / 1900   SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network WCDMA (900 / 2100)   HSDPA 850 / 900 / 2100  
4G Network LTE   LTE band 1(2100), 3(1800), 5(850), 8(900), 28(700), 38(2600), 40(2300), 41(2500)  
Dimensions 150 x 73.4 x 8.3 mm   166.14 x 77.01 x 8.39 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Nano-SIM + Nano-SIM  
Weight 175 g   209 g  
Display Type HD Display, 16M colors, Mltitouch   IPS LCD Capacitive Touchscreen   90Hz, 1000 nits Brightness  
Display Size 720 x 1280 pixels (~277 PPI pixel density)   6.68 Inches   720 x 1608 Pixels (~264 PPI)  
Protection Scratch Resistant Glass  
Memory 32GB built-in, 3GB RAM   128GB Built-in, 8GB RAM, eMMC 5.1  
Card slot microSD card (supports up to 128GB   microSD Card, (supports up to 2TB)  
GPRS Yes
EDGE Yes
WLAN Wi-Fi 802.11 b/g/n   Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot  
BlueTooth v4.0 with A2DP   v5.2 with A2DP, LE  
USB microUSB v2.0   USB Type-C 2.0, OTG  
NFC No   No  
GPS Yes + A-GPS support   Yes + A-GPS support & Glonass, BDS, GALILEO, QZSS  
Main Camera Geo-tagging, touch focus, face detection, panorama, HDR, Video   Dual Camera: 50 MP, f/1.8 + 0.08 MP, f/2.2, LED Flash   Night, Portrait, Video, Live Photo, Slo-mo, Time-lapse, Panorama, Video  
Front Camera 5 MP, f2.2   5 MP  
OS Android OS V6.0 (Marshmallow)   Android 15 OS  
Chipset Mediatek MT6750   Unisoc T7225 (12 nm)  
Processor 1.5 GHZ Octa-Core   Octa-Core (2 × 1.8 GHz + 6 × 1.8 GHz)  
GPU Mali-T860MP2   Arm Mali G57  
Sensors Accelerometer, proximity, Light, Gravity   Accelerometer, Compass, Fingerprint (side mounted), Gyro, Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP4/WMV/H.264/H.263 player, MP3/AAC/WMA/WAV player, Speaker Phone   3.5mm Audio Jack, Speaker Phone  
Colors Various   Coral Red, Jade Green  
Battery - Non-removable   Li-ion 6500 mAh   - Fast charging 44W  
Misc Google Search, Maps, Gmail, You Tube, Calendar, SNS integration, Google Talk   SMS(threaded view), MMS, Email, Push Mail, IM   Document viewer, Photo/video editor