4.30 average based on 2471 reviews.
Microsoft Lumia 640 Dual SIM Mobile Phones Full 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 |
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 |
| 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 life | Endurance rating 76h |