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Lenovo Vibe B vs Tecno Spark 50

2G Network SIM1: 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 LTE  
Dimensions 132.5x 66 x 9.9 mm 167.8 x 79.2 x 8.2 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight 144g 210 g  
Display Type TFT capacitive touchscreen, 16M colors, MUltitouch IPS LCD Capacitive Touchscreen   120Hz  
Display Size 4.5 Inches, 480 x 854 pixels 218 PPI (pixel density) 6.78 Inches   720 x 1600 Pixels (~259 PPI)  
Memory 8GB built-in 128GB Built-in, 6GB RAM (+12GB Extended RAM)  
Card slot microSD card (supports up to 32GB) microSDXC (dedicated slot)  
RAM 1GB 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 V4.0 With A2DP v5.3 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C  
NFC No  
GPS Yes Yes + A-GPS support  
Main Camera 5 MP, LED flash, Auto focus, GeoTagging, Video, 50 MP, f/1.9, (wide), PDAF, LED Flash   Panorama, Video (1440p@30fps, 1080p@30fps)  
Front Camera 2MP 8 MP, f/2.0, (wide)  
OS Android OS V6.0 (Marshmallow) Android 16 OS  
Chipset MediaTek MT67 MediaTek Helio G81  
Processor 1.0 GHZ Quad-Core Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU GPU: Mali T720 Mali-G57 MC2  
Sensors Accelerometer, Proximity, compass Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5 HTML5  
Sound FM radio, 3.5mm Jack, MP3/WAV/eAAC+/FLAC player, MP4/H.264 player, Google talk, Games 3.5mm Audio Jack, Speaker  Phone  
Colors Black, White Halo Blue, Titanium Grey, Ink Black, Aurora Purple  
Battery 2000 mAh 7000 mAh   - 18W wired  
Misc GPS + A-GPS support, Document viewer, Photo video/editor, Dual SIM + Mini-SIM, dual stand-by), google Search, Maps, Gmail, YouTube, Calendar, Google Talk SMS(threaded view), MMS, Email, Push Mail, IM   Glass front, plastic frame, plastic back, IP64 dust tight and water resistant (water splashes), Drop resistant up to 1.5m