Price N/A
| Key Specs |
| Display |
5" |
| Battery |
2500 mAh |
| Camera |
8 MP |
| Storage |
8 GB 1 GB RAM |
| | 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 | | 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 | Dual SIM (Micro-SIM, dual stand-by) |
| | Display for Microsoft Lumia 640 Dual SIM |
|---|
| 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 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) | | Internal | 8 GB, 1 GB RAM |
| | Camera |
|---|
| Primary | 8 MP, f/2.2, 28mm, autofocus, LED flash | | Features | 1/4" sensor size | | Video | 1080p@30fps | | 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 | v4.0, A2DP | | GPS | Yes, with A-GPS, GLONASS, BDS | | Radio | FM radio | | USB | microUSB v2.0 |
| | 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 840 h (2G) / Up to 840 h (3G) | | Talk time | Up to 27 h 30 min (2G) / Up to 20 h 30 min (3G) |
| | 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 | |
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