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Nokia Lumia 925 vs Vivo Y28 8GB

2G Network GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 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)  
Available Available. Released 2013, September
Dimensions 165.7 x 76 x 8 mm  
Sim Type Micro-SIM Dual Sim, Hybrid Dual SIM (Nano-SIM)  
Weight 139 g (4.90 oz) 199 g  
Display Type AMOLED capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   90Hz, 760 nits (typ), 1000 nits (HBM)  
Display Size 768 x 1280 pixels, 4.5 inches (~332 ppi pixel density) 6.68 Inches   720 x 1608 Pixels (~264 PPI)  
Memory 16 GB Internal, no Card Slot 128GB Built-in, 8GB RAM (+8GB Extended RAM), UFS 2.2  
Card slot microSDXC (uses shared SIM slot)  
RAM 1GB
GPRS Class B Yes
EDGE Up to 236.8 kbps
3G Yes
WLAN Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n, dual-band  
BlueTooth Yes, v3.0 with A2DP v5.0 with A2DP, LE  
USB Yes, microUSB v2.0 USB Type-C 2.0, OTG  
NFC No  
GPS Yes, with A-GPS support and GLONASS Yes + AGPS, GLONASS, BDS, GALILEO  
Main Camera 8 MP, 3264 x 2448 pixels, Carl Zeiss optics, optical image stabilization, autofocus, dual-LED flash 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 Yes, 1.3 MP, 720p@30fps 8 MP, f/2.1, (wide), Video (1080p@30fps)  
OS Microsoft Windows Phone 8, upgradeable to WP8 Amber Android 14 OS  
Chipset MediaTek Helio G85 SoC  
Processor Dual-core 1.5 GHz Krait 2.0 Ghz Octa Core  
GPU Mali G57 MP2  
Sensors Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5 HTML5  
Radio FM radio
Sound 3.5mm HeadJack, Loud Speaker 3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone   Smartphone deals
Colors Black, White, Gray Agate Green, Gleaming Orange  
Battery Non-removable Li-Ion 2000 mAh battery (BL-4YW) (Non removable), 6000 mAh   - Fast battery 44W wired  
StandBy Time (2G) / Up to 440 h (3G)
TalkTime Up to 18 h 20 min (2G) / Up to 12 h 40 min (3G)
Misc 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