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Samsung Galaxy S Duos S7562 vs Vivo Y28 8GB

2G Network SIM 1: GSM 850 / 900 / 1800 / 1900SIM 2: GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 900 / 2100 HSDPA 850 / 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 8(900), 28(700), 38(2600), 40(2300), 41(2500)  
Dimensions 121.5 x 63.1 x 10.5 mm 165.7 x 76 x 8 mm  
Sim Type Dual Sim, Hybrid Dual SIM (Nano-SIM)  
Weight 120 g 199 g  
Display Type TFT capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 760 nits (typ), 1000 nits (HBM)  
Display Size 480 x 800 pixels, 4 inches (~233 ppi pixel density) 6.68 Inches   720 x 1608 Pixels (~264 PPI)  
Memory 4GB built-in 128GB Built-in, 8GB RAM (+8GB Extended RAM), UFS 2.2  
Card slot microSD card (supports up to 32GB) microSDXC (uses shared SIM slot)  
RAM 768 RAM
GPRS Yes Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n, dual-band  
BlueTooth Bluetooth v3.0 with A2DP v5.0 with A2DP, LE  
USB USB USB Type-C 2.0, OTG  
NFC No  
GPS Yes Yes + AGPS, GLONASS, BDS, GALILEO  
Main Camera 5MP, 2592x1944 pixels, Video (VGA 30fps), autofocus, Geo-tagging 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 8 MP, f/2.1, (wide), Video (1080p@30fps)  
OS Android OS, v4.0 (Ice Cream Sandwich) Android 14 OS  
Chipset GPU Adreno 20 MediaTek Helio G85 SoC  
Processor 1 GHz Cortex-A5, Qualcomm MSM7227A Snapdragon 2.0 Ghz Octa Core  
GPU GPU Adreno 200 Mali G57 MP2  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML, Flash HTML5  
Sound Stereo FM Radio with RDS, MP4/H.264/H.263 player, MP3/WAV/eAAC+ player, Youtube, Google Talk, Games (built-in + downloadable) 3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone   Smartphone deals
Colors White Agate Green, Gleaming Orange  
Battery Talk time Up to 13 hrsStand-by Up to 445 hrs1500mAh (Non removable), 6000 mAh   - Fast battery 44W wired  
StandBy Time Talk time Up to 13 hrsStand-by Up to 445 hrs1500mAh
Misc GPS with A-GPS support, Dual SIM (dual stand-by), Organizer, Document editor, Image editor, Google Search, Maps, Gmail, Calendar, Picasa integration, Voice memo/dial, Predictive text input (Swype), Speakerphone 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