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Microsoft Lumia 640 Dual SIM vs Infinix Hot 20i

2G Network SIM1: GSM 850 / 900 / 1800 / 1900 SIM2: GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900SIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 900 / 2100  
4G Network LTE band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 40(2300), 41(2500)  
Dimensions 141.3 x 72.2 x 8.8 mm 164.8 x 76.4 x 8.8 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 145 g 195 g  
Display Type IPS LCD capacitive touchscreen, 16M colors, ClearBlack display IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   500 nits (peak)  
Display Size 5.0 inches (~67.6% screen to body ratio), 720 x 1280 pixels (~294 ppi pixel density) 6.6 Inches   720 x 1612 Pixels (~267 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3
Memory 8GB built-in 64/128GB Built-in, 3/4GB RAM  
Card slot microSD card (supports up to 128GB) microSDXC (dedicated slot)  
RAM 1GB RAM
GPRS Yes Yes
WLAN WLAN (Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot  
BlueTooth Bluetooth v4.0 with A2DP v5.0 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C 2.0, USB On-The-Go  
NFC No  
GPS Yes Yes + A-GPS support  
Main Camera 8 MP, 3264 x 2448 pixels, autofocus, LED flash, 1/4'' sensor size, Video (1080p@30fps), Triple Camera: 13 MP, f/1.8, (wide), AF + Other cameras unspecified, Dual LED Flash   autofocus, Continuous shooting, Digital zoom, Face detection, HDR, Panorama, Video (1080p@30fps)  
Front Camera 1 MP, 720p 8 MP, LED Flash, Video (1080p@30fps)  
OS Microsoft Windows Phone 8.1 with Lumia Denim Android 12 Go edition  
Chipset Qualcomm Snapd MediaTek MT6762G Helio G25 (12 nm)  
Processor 1.2 GHz Quad-Core Cortex-A7 Octa-core (4 x 2.0 GHz Cortex-A53 + 4 x 1.5 GHz Cortex-A53)  
GPU GPU: Adreno 305 PowerVR GE8320  
Sensors Accelerometer, proximity, compass Accelerometer, Fingerprint (rear-mounted), Proximity  
Browser HTML5 HTML5  
Sound Stereo FM radio with RDS, 3.5mm audio jack, MP4/H.264/H.263/WMV player, MP3/WAV/eAAC+/WMA player, Video/photo editor, Games (built-in) 3.5mm Audio Jack, MP3/WAV/eAAC+/FlAC player, DivX/Xvid/MP4/H.265 player, Speaker Phone  
Colors Glossy cyan, Orange, White, Matte black Wilderness Black, Luna Blue, Energy Green, Sunset Gold  
Battery 30 min 2500 mAh (Li-ion Non removable), 5000 mAh   - Reverse charging 5W  
StandBy Time Stand-by up to 840 hrs
TalkTime Talk-time up to 27 hrs
Misc GPS + A-GPS support, GPU, Dual SIM (Micro-SIM, dual stand-by), Active noise cancellation with dedicated mic, Document viewer/editor, Speakerphone SMS(threaded view), MMS, Email, Push Mail, IM   Glass front, plastic back, plastic frame, Photo/video editor, Document viewer