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Microsoft Lumia 640 Dual SIM
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Microsoft Lumia 640 Dual SIM Full Specifications
General
| Announced | 2015, March |
| Status | Available. Released 2015, April |
| Colors | Glossy cyan, Orange, White, Matte black |
Network
| Technology | GSM / HSPA |
| 2G | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G | HSDPA 850 / 900 / 1900 / 2100 |
| Speed | HSPA 42.2/5.76 Mbps |
| GPRS | Yes |
| Edge | Yes |
Design
| 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 (~67.6% screen-to-body ratio) |
| Resolution | 720 x 1280 pixels (~294 ppi pixel density) |
| Protection | Corning Gorilla Glass 3 |
| Multitouch | Yes |
Hardware & Software
| OS | Microsoft Windows Phone 8.1 with Lumia Denim |
| 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) |
| Variants | 8 GB, 1 GB RAM |
Camera
| Primary | 8 MP, f/2.2, 28mm, autofocus, LED flash |
| Features | 1/4" sensor size |
| Secondary | 1 MP, 720p |
Multimedia
| Alert types | Vibration; MP3, WAV ringtones |
| Loudspeaker | Voice 70dB / Noise 65dB / Ring 75dB |
| 3.5mm Jack | Yes |
Connectivity
| WIFI | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| Bluetooth | v4.0, A2DP |
| Navigation | Yes, with A-GPS, GLONASS, BDS |
| USB | microUSB v2.0 |
| Radio | FM radio |
Extra
| Sensors | Accelerometer, proximity, compass |
| Messaging | SMS (threaded view), MMS, Email, Push Email, IM |
| Browser | HTML5 |
| Java | No |
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) |
| Battery | Removable Li-Ion 2500 mAh battery |
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