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Microsoft Lumia 640 XL vs Tecno Spark 40

2G Network 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  
Dimensions 157.9 x 81.5 x 9 mm 165.6 x 77 x 7.7 mm  
Sim Type Nano-SIM + Nano-SIM  
Weight 171 g N/A  
Display Type IPS LCD capacitive touchscreen, 16M colors, ClearBlack display IPS LCD Capacitive Touchscreen   120Hz  
Display Size 5.7 inches (~69.1% screen to body ratio), 720 x 1280 pixels (~259 ppi pixel density) 6.67 Inches   1080 x 2460 Pixels (~403 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3
Memory 8GB built-in 128/256GB Built-in, 4/6/8GB RAM  
Card slot microSD card (supports up to 128GB) 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 13 MP, 4128 x 3096 pixels, Carl Zeiss optics, autofocus, LED flash, 1/3'' sensor size, Video (1080p@30fps), Single Camera: 50 MP, (wide), PDAF Auxiliary lens, Dual LED Flash   Panorama, Video (1440p@30fps, 1080p@30fps)  
Front Camera 5 MP, 1080p 8 MP, (wide), Dual LED Flash, Video (1080p@30fps)  
OS Microsoft Windows Phone 8.1 with Lumia Denim Android 15 OS  
Chipset Qualcomm Snapd Mediatek Helio G81 (12 nm)  
Processor 1.2 GHz Quad-Core Cortex-A7 Octa-core (2 x 2.0 GHz Cortex-A75 + 6x 1.8 GHz Cortex-A55)  
GPU GPU: Adreno 305 Mali-G52 MC2  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (side-mounted), Proximity  
Browser HTML5 HTML5  
Sound FM radio, 3.5mm audio jack, MP4/H.264/H.263/WMV player, MP3/WAV/eAAC+/WMA player, Video editor, Games (built-in) 3.5mm Audio Jack, 24-bit/192kHz Hi-Res audio, Speaker Phone  
Colors Matte cyan, Orange, Black, Matte white, Glossy white Ink Black, Titanium Grey, Veil White, Mirage Blue  
Battery Talk-time up to 31 hrs 20 min 3000 mAh 5200 mAh   - Fast battery 45W wired, 55 min to 100%  
StandBy Time Stand-by up to 936 hrs
TalkTime Talk-time up to 31 hrs 20 min 3000 mAh
Misc GPS + A-GPS support and GLONASS, Micro-SIM card, Active noise cancellation with dedicated mic, Document viewer/editor, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   IP64 dust tight and water resistant (water splashes), Drop resistant up to 1.5m