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Samsung Galaxy Y Duos S6312 vs Tecno Spark 40

2G Network Sim 1: GSM 850 / 900 / 1800 / 1900 Sim 2: GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  Best smartphone
3G Network HSDPA 900 / 2100 HSDPA 900 / 2100  
4G Network LTE  
Dimensions N/A 165.6 x 77 x 7.7 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight N/A N/A  
Display Type HVGA LCD, 256K colors, TouchWiz UI IPS LCD Capacitive Touchscreen   120Hz  
Display Size 320 x 480 pixels, 3.27 inches (~127 ppi pixel density) 6.67 Inches   1080 x 2460 Pixels (~403 PPI)  
Memory 4GB built-in 128/256GB Built-in, 4/6/8GB RAM  
Card slot microSD card(supports up to 64GB) microSDXC  
RAM 768 MB RAM
GPRS Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth v3.0 with A2DP v5.4 with A2DP, LE  
USB USB USB Type-C  
NFC No  
GPS Yes Yes + A-GPS support  
Main Camera 3 MP, 2048 x 1536 pixels, Geo-tagging, Video (QVGA 24fps) Single Camera: 50 MP, (wide), PDAF Auxiliary lens, Dual LED Flash   Panorama, Video (1440p@30fps, 1080p@30fps)  
Front Camera 8 MP, (wide), Dual LED Flash, Video (1080p@30fps)  
OS Android 4.1, Jelly Bean Android 15 OS  
Chipset Mediatek Helio G81 (12 nm)  
Processor 1Ghz Octa-core (2 x 2.0 GHz Cortex-A75 + 6x 1.8 GHz Cortex-A55)  
GPU Mali-G52 MC2  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML (Adobe Flash) HTML5  
Sound Stereo FM radio with RDS, 3.5mm audio jack, MP4/WMV/H.264 player, MP3/WAV/eAAC+ player, YouTube, Google Talk, Image/video editor, SNS integration, Games (built-in + downloadable) 3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone  
Colors Black Ink Black, Titanium Grey, Veil White, Mirage Blue  
Battery Stand-by Up to 360 h 5200 mAh   - Fast battery 45W wired, 55 min to 100%  
StandBy Time Stand-by Up to 360 h
Misc Dual SIM (dual stand-by), GPS + A-GPS support, Samsung hub service,Games hub, DropBox Cloud storage, Sync & backup, Quickoffice document viewer/editor, Google Search, Maps, Gmail, Calendar, Picasa integration, Organizer, Predictive text input (Swype) SMS(threaded view), MMS, Email, Push Mail, IM   IP64 dust tight and water resistant (water splashes), Drop resistant up to 1.5m