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Microsoft Lumia 640 Dual SIM
network
- Technology GSM / HSPA
- 2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
- 3G bands HSDPA 850 / 900 / 1900 / 2100
- Speed HSPA 42.2/5.76 Mbps
launch
- Announced 2015, March
- Status Available. Released 2015, April
body
- Dimensions 141.3 x 72.2 x 8.8 mm (5.56 x 2.84 x 0.35 in)
- Weight 145 g (5.11 oz)
- SIM Dual SIM (Micro-SIM, dual stand-by)
display
- Type IPS LCD capacitive touchscreen, 16M colors
- Size 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio)
- Resolution 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
platform
- OS Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
- Chipset Qualcomm MSM8926 Snapdragon 400 (28 nm)
- CPU Quad-core 1.2 GHz Cortex-A7
- GPU Adreno 305
memory
- Card slot microSDXC (dedicated slot)
- Internal 8GB 1GB RAM
main camera
- Modules 8 MP, f/2.2, 28mm (wide), 1/4.0", AF
- Features LED flash
- Video 1080p@30fps
selfie camera
- Modules 1 MP
- Video 720p
sound
- Loudspeaker Yes
- 3.5mm jack Yes
comms
- WLAN Wi-Fi 802.11 b/g/n, DLNA, hotspot
- Bluetooth 4.0, A2DP
- GPS Yes, with A-GPS, GLONASS, BDS
- USB microUSB 2.0
features
- Sensors Accelerometer, proximity, compass
battery
- Removable Li-Ion 2500 mAh battery
misc
- Colors Glossy cyan, Orange, White, Matte black