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Microsoft Lumia 640 Dual SIM vs Xiaomi  Poco C75

2G Network SIM1: GSM 850 / 900 / 1800 / 1900 SIM2: GSM 850 / 900 / 1800 / 1900 SIM1: GSM 850 / 900 / 1800 / 1900Smartphone dealsSIM2: GSM 850 / 900 / 1800 / 1900  
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Network LTE  
Dimensions 141.3 x 72.2 x 8.8 mm 171.88 x 77.8 x 8.22 mm  
Sim Type Dual Sim, Dual Standby (Nano-SIM)  
Weight 145 g 204 g  
Display Type IPS LCD capacitive touchscreen, 16M colors, ClearBlack display IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch   120Hz, 450 nits (typ), 600 nits (HBM)  
Display Size 5.0 inches (~67.6% screen to body ratio), 720 x 1280 pixels (~294 ppi pixel density) 6.88 Inches   720 x 1640 Pixels (~260 PPI)  
Multitouch Yes
Protection Corning Gorilla Glass 3
Memory 8GB built-in 256GB Built-in, 8GB RAM, eMMC 5.1  
Card slot microSD card (supports up to 128GB) 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 v5.4 with A2DP, LE  
USB USB (microUSB v2.0) USB Type-C 2.0  
NFC Yes  
GPS Yes A-GPS support & Glonass, BDS  
Main Camera 8 MP, 3264 x 2448 pixels, autofocus, LED flash, 1/4'' sensor size, Video (1080p@30fps), Dual Camera: 50 MP, f/1.8, 28mm (wide), PDAF + Auxiliary lens, LED Flash   Geo-tagging, touch focus, face detection, HDR, panorama, Video (1080p@30fps)  
Front Camera 1 MP, 720p 13 MP, f/2.0, HDR, Video (1080p@30fps)  
OS Microsoft Windows Phone 8.1 with Lumia Denim Android 14 OS  
Chipset Qualcomm Snapd MediaTek Helio G81-Ultra  
Processor 1.2 GHz Quad-Core Cortex-A7 Octa-core (2 x 2.0 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55)  
GPU GPU: Adreno 305 Mali-G52 MP2  
Sensors Accelerometer, proximity, compass Accelerometer, Compass, Fingerprint (side-mounted), Virtual proximity sensing  
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, Speaker Phone  
Colors Glossy cyan, Orange, White, Matte black Black, Green, Silver  
Battery 30 min 2500 mAh (Non removable), 5160 mAh   - 18W wired, PD  
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   NFC, (market/region dependent), Glass front, plastic frame, glass back, Photo/video editor, Document viewer