Microsoft Lumia 640 Dual SIM
Specifications
| 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. Released 2015, April |
| Status | Discontinued |
| 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 |
| 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 | |
|---|---|
| Single | 8 MP, f/2.2, 28mm (wide), 1/4.0", AF |
| Features | LED flash |
| Video | 1080p@30fps |
| Selfie Camera | |
|---|---|
| Single | 1 MP |
| Video | 720p |
ADVERTISEMENT
| Sound | |
|---|---|
| Loudspeaker | Yes |
| 3.5mm jack | Yes |
| Comms | |
|---|---|
| WLAN | Wi-Fi 802.11 b/g/n, DLNA, hotspot |
| Bluetooth | 4.0, A2DP |
| Positioning | GPS, GLONASS, BDS |
| NFC | No |
| Radio | FM radio |
| USB | microUSB 2.0 |
| Features | |
|---|---|
| Sensors | Accelerometer, proximity, compass |
| Battery | |
|---|---|
| Type | Li-Ion 2500 mAh, removable |
| 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 |
| Price | About 170 EUR |
| 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 (old) | Endurance rating 76h |
