| Hardware and OS | Microsoft Lumia 640 LTE | |
| Operating system | Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10 | |
| Processor | Quad-core 1.2 GHz Cortex-A7 | |
| Chipset | Qualcomm MSM8926 Snapdragon 400 (28 nm) | |
| GPU | Adreno 305 | |
| Internal memory | 8 GB, 1 GB RAM | |
| External memory | microSD, up to 256 GB (dedicated slot) | |
| Display | Microsoft Lumia 640 LTE | other phones |
| Type | IPS LCD | |
| Size | 5" inc | |
| Resolution | 720 x 1280 px | |
| Protection | Corning Gorilla Glass 3 | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 67.6% | |
| Display area | 68.9 cm2 | |
| Display aspect ratio | 16:9 (height:width) | |
| Pixel Density | 294 PPI | |
| Colors | 16M | |
| Other | ClearBlack display | |
| Connectivity | Microsoft Lumia 640 LTE | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 | |
| 3G Network | HSDPA 850 / 900 / 2100 | |
| 4G Network | LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) | |
| Wi-Fi | Wi-Fi 802.11 b/g/n, DLNA, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Micro-SIM | |
| Bluetooth | 4.0, A2DP | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| NFC | Yes | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| USB | microUSB 2.0 | |
| Camera | Microsoft Lumia 640 LTE | other phones |
| Main camera | 8 MP, Single | |
| Specs | 8 MP, f/2.2, 28mm (wide), 1/4', AF | |
| Features | LED flash | |
| Video | 1080p@30fps | |
| Selfie camera | 1 MP, Single | |
| Multimedia | Microsoft Lumia 640 LTE | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | Microsoft Lumia 640 LTE | other phones |
| Colors | Glossy cyan, Orange, White, Matte black | |
| Dimensions | 141.3 x 72.2 x 8.8 mm | |
| Weight | 145 g | |
| Battery | Microsoft Lumia 640 LTE | other phones |
| Battery capacity | 2500 mAh, Removable Li-Ion | |
| Battery life | Stand by time- Up to 864 h (2G) / Up to 864 h (3G)
Talking time- Up to 26 h 30 min (2G) / Up to 17 h 30 min (3G)
| |
| Other | Microsoft Lumia 640 LTE | other phones |
| Release date | 2015, March | |
| Sensors | Accelerometer, proximity, compass | |
