Microsoft Lumia 640 Dual SIM Full Specifications

network
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  • 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)
  • Protection Corning Gorilla Glass 3
  • ClearBlack display
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
  • eMMC 4.5
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
  • Radio FM radio
  • USB microUSB 2.0
features
  • Sensors Accelerometer, proximity, compass
battery
  • Removable Li-Ion 2500 mAh battery
  • Stand-by Up to 840 h (2G) / Up to 840 h (3G)
  • Talk time Up to 27 h 30 min (2G) / Up to 20 h 30 min (3G)
misc
  • Colors Glossy cyan, Orange, White, Matte black
tests
  • Display Contrast ratio: 1034 (nominal), 2.563 (sunlight)
  • Loudspeaker Voice 70dB / Noise 65dB / Ring 75dB
  • Audio quality Noise -93.1dB / Crosstalk -93.2dB
  • Battery life Endurance rating 76h