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Lenovo Vibe X2 vs Tecno Spark 40

2G Network Sim1: 850 / 900 / 1800 / 1900 Sim2: 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  Best smartphone
3G Network HSDPA 850 / 900 / 1700 / 1900 / 2100 HSDPA 900 / 2100  
4G Network LTE 800 / 1800 / 2100 / 2600 LTE  
Dimensions 140.2 x 68.6 x 7.3 mm 165.6 x 77 x 7.7 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight 120 g N/A  
Display Type IPS LCD capacitive touchscreen, 16M colors IPS LCD Capacitive Touchscreen   120Hz  
Display Size 5.0 inches (~71.7% screen to body ratio), 1080 x 1920 pixels (~441 ppi pixel density) 6.67 Inches   1080 x 2460 Pixels (~403 PPI)  
Multitouch Yes
Memory 32GB built-in 128/256GB Built-in, 4/6/8GB RAM  
Card slot microSDXC  
RAM 2GB RAM
GPRS Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n/ac Wi-Fi 802.11 a/b/g/n/ac, dual-band  
BlueTooth Bluetooth 4.1 v5.4 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C  
NFC No  
GPS Yes Yes + A-GPS support  
Main Camera 13 MP, 4160 x 3120 pixels, autofocus, LED flash, Geo-tagging, touch focus, face detection, panorama, HDR, Video (1080p@30fps), Single Camera: 50 MP, (wide), PDAF Auxiliary lens, Dual LED Flash   Panorama, Video (1440p@30fps, 1080p@30fps)  
Front Camera 5 MP 8 MP, (wide), Dual LED Flash, Video (1080p@30fps)  
OS Android OS, v4.4 (KitKat) Android 15 OS  
Chipset MediatTek MT6595 Mediatek Helio G81 (12 nm)  
Processor 2.0 GHz Quad-Core Cortex-A17 + 1.7 GHz Quad-Core Cortex-A7 Octa-core (2 x 2.0 GHz Cortex-A75 + 6x 1.8 GHz Cortex-A55)  
GPU GPU: PowerVR G600 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+ player, MP4/H.263/H.264 player, Google talk, Games 3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone  
Colors White, Gold, Red, Charcoal Ink Black, Titanium Grey, Veil White, Mirage Blue  
Battery Talk-time up to 17 hrs 2300 mAh 5200 mAh   - Fast battery 45W wired, 55 min to 100%  
TalkTime Talk-time up to 17 hrs 2300 mAh
Misc GPS + A-GPS support, Organizer, Document viewer, Photo viewer/editor, Air gestures, Active noise cancellation with dedicated mic, Voice memo/dial, Micro-SIM - Single SIM model, Dual SIM (Micro-SIM / Nano-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