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Samsung Galaxy M31s vs Vivo Y28 8GB

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 / 1700(AWS) / 1900 / 2100   HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800)   LTE band 1(2100), 3(1800), 5(850), 8(900), 28(700), 38(2600), 40(2300), 41(2500)  
Dimensions 159.3 x 74.4 x 9.3 mm   165.7 x 76 x 8 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)   Dual Sim, Hybrid Dual SIM (Nano-SIM)  
Weight 203 g   199 g  
Display Type Super AMOLED Capacitive Touchscreen, 16M Colors, Multitouch   IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 760 nits (typ), 1000 nits (HBM)  
Display Size 1080 x 2400 Pixels (~405 PPI)   6.68 Inches   720 x 1608 Pixels (~264 PPI)  
Protection Corning Gorilla Glass 3  
Memory 128GB Built-in, 6GB RAM   128GB Built-in, 8GB RAM (+8GB Extended RAM), UFS 2.2  
Card slot microSDXC (dedicated slot)   microSDXC (uses shared SIM 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, dual-band  
BlueTooth v5.0 with A2DP, LE   v5.0 with A2DP, LE  
USB 2.0, Type-C 1.0 reversible connector, USB On-The-Go   USB Type-C 2.0, OTG  
NFC Yes   No  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO   Yes + AGPS, GLONASS, BDS, GALILEO  
Main Camera Phase detection, Geo-tagging, touch focus, face detection, panorama, HDR, Video ([email protected], [email protected], gyro-EIS)   Dual Camera: 50 MP, f/1.8, (wide), PDAF + 2 MP, f/2.4, (depth), LED Flash   Geo-tagging, Phase detection, Panorama, HDR, Video (1080p@30fps)  
Front Camera 32 MP, f/2.2, 26mm (wide), 1/2.8", HDR, Video ([email protected], [email protected])   8 MP, f/2.1, (wide), Video (1080p@30fps)  
OS Android 10.0 OS   Android 14 OS  
Chipset Exynos 9611 (10nm)   MediaTek Helio G85 SoC  
Processor Octa-core (4 x 2.3 GHz Cortex-A73 + 4 x 1.7 GHz Cortex-A53)   2.0 Ghz Octa Core  
GPU Mali-G72 MP3   Mali G57 MP2  
Sensors Accelerometer, Compass, Fingerprint (side mounted), Gyro, Proximity   Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5   HTML5  
Sound 3.5mm Audio Jack, MP3/WAV/WMA/eAAC+/FLAC player, MP4/WMV/H.265 player, Speaker Phone   3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone   Smartphone deals
Colors Mirage Black, Mirage Blue   Agate Green, Gleaming Orange  
Battery - Fast battery charging 25W, Reverse charging   (Non removable), 6000 mAh   - Fast battery 44W wired  
Misc Glass front + Gorilla Glass 3), Plastic back, Plastic frame, Active noise cancellation with dedicated mic, Photo/video editor, Document viewer   SMS(threaded view), MMS, Email, Push Mail, IM   Notification LED round light on the back, Glass front, plastic frame, plastic back, IP64 dust/water resistant, Document viewer, Photo/video editor