data-spec="modelname">Microsoft Lumia 640 LTE
Network Technology GSM / HSPA / LTE
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100
  HSDPA 850 / 1700(AWS) / 1900 / 2100 - T-Mobile
4G bands LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800)
  LTE band 1(2100), 2(1900), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) - T-Mobile
Speed HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
GPRS Yes
EDGE Yes
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 Micro-SIM
Display Type IPS LCD capacitive touchscreen, 16M colors
Size 5.0 inches (~67.6% screen-to-body ratio)
Resolution 720 x 1280 pixels (~294 ppi pixel density)
Multitouch Yes
Protection Corning Gorilla Glass 3
 - ClearBlack display
Platform OS Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10
Chipset Qualcomm MSM8926 Snapdragon 400
CPU Quad-core 1.2 GHz Cortex-A7
GPU Adreno 305
Memory Card slot microSD, up to 256 GB (dedicated slot)
Internal 8 GB, 1 GB RAM
Camera Primary 8 MP, f/2.2, 28mm, autofocus, LED flash, check quality
Features 1/4" sensor size
Video 1080p@30fps, check quality
Secondary 1 MP, 720p
Sound Alert types Vibration; MP3, WAV ringtones
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
NFC Yes
Radio FM radio
USB microUSB 2.0
Features Sensors Accelerometer, proximity, compass
Messaging SMS (threaded view), MMS, Email, Push Email, IM
Browser HTML5
Java No
 - MP3/WAV/eAAC+/WMA player
- MP4/H.264/WMV player
- OneDrive (30 GB cloud storage)
- Document viewer
- Photo/video editor
Battery   Removable Li-Ion 2500 mAh battery
Stand-by Up to 864 h (2G) / Up to 864 h (3G)
Talk time Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G)
Misc Colors Glossy cyan, Orange, White, Matte black
Price About 120 EUR
Tests Display Contrast ratio: 1034 (nominal), 2.563 (sunlight)
Camera Photo / Video
Loudspeaker Voice 70dB / Noise 65dB / Ring 75dB
Audio quality Noise -93.1dB / Crosstalk -93.2dB
Battery life

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