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Lenovo Vibe B vs Tecno Spark 40

2G Network SIM1: GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  Best smartphone
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 900 / 2100  
4G Network LTE LTE  
Dimensions 132.5x 66 x 9.9 mm 165.6 x 77 x 7.7 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight 144g N/A  
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) 6.67 Inches   1080 x 2460 Pixels (~403 PPI)  
Memory 8GB built-in 128/256GB Built-in, 4/6/8GB RAM  
Card slot microSD card (supports up to 32GB) microSDXC  
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 v5.4 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, Single Camera: 50 MP, (wide), PDAF Auxiliary lens, Dual LED Flash   Panorama, Video (1440p@30fps, 1080p@30fps)  
Front Camera 2MP 8 MP, (wide), Dual LED Flash, Video (1080p@30fps)  
OS Android OS V6.0 (Marshmallow) Android 15 OS  
Chipset MediaTek MT67 Mediatek Helio G81 (12 nm)  
Processor 1.0 GHZ Quad-Core Octa-core (2 x 2.0 GHz Cortex-A75 + 6x 1.8 GHz Cortex-A55)  
GPU GPU: Mali T720 Mali-G52 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, 24-bit/192kHz Hi-Res audio, Speaker Phone  
Colors Black, White Ink Black, Titanium Grey, Veil White, Mirage Blue  
Battery 2000 mAh 5200 mAh   - Fast battery 45W wired, 55 min to 100%  
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   IP64 dust tight and water resistant (water splashes), Drop resistant up to 1.5m