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Samsung Galaxy S Duos S7562 vs Tecno Spark 40

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  Best smartphone
3G Network HSDPA 900 / 2100 HSDPA 900 / 2100  
4G Network LTE  
Dimensions 121.5 x 63.1 x 10.5 mm 165.6 x 77 x 7.7 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight 120 g N/A  
Display Type TFT capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen   120Hz  
Display Size 480 x 800 pixels, 4 inches (~233 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 32GB) microSDXC  
RAM 768 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 5MP, 2592x1944 pixels, Video (VGA 30fps), autofocus, Geo-tagging 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 OS, v4.0 (Ice Cream Sandwich) Android 15 OS  
Chipset GPU Adreno 20 Mediatek Helio G81 (12 nm)  
Processor 1 GHz Cortex-A5, Qualcomm MSM7227A Snapdragon Octa-core (2 x 2.0 GHz Cortex-A75 + 6x 1.8 GHz Cortex-A55)  
GPU GPU Adreno 200 Mali-G52 MC2  
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  
Colors White Ink Black, Titanium Grey, Veil White, Mirage Blue  
Battery Talk time Up to 13 hrsStand-by Up to 445 hrs1500mAh 5200 mAh   - Fast battery 45W wired, 55 min to 100%  
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   IP64 dust tight and water resistant (water splashes), Drop resistant up to 1.5m