Microsoft Lumia 640 LTE
| Type | Touch |
| Dimensions | 141.30 x 72.20 x 8.80 mm |
| Weight | 145.00 g |
| Display size | 5.00" |
| Display | Color / IPS TFT 16M colors 720 x 1280 px (5.00") 294 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |
| Additional display |  |
| Protection of the secondary display | |
| Talk time (max.) | 2G: 1590 min. (26.5 h) 3G: 1050 min. (17.5 h) |
| Stand-by (max.) | 2G: 864 h. (36.0 days) |
| Playback time (max.) | Audio: 86 h (3.6 days) Video: 8,6 h (0.3 days) |
| Internet browsing time (max.) | WiFi: 10,8 h (0.4 days) |
| Standard battery | Li-Ion 2500 mAhBuy powerbank
|
| Quick battery charging | |
| Wireless battery charging | |
| Internal memory | 8 GB |
| RAM memory | 1 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 128 GBBuy memory card |
| Operating system | MS Windows Phone 8.1 |
| Processor | Qualcomm Snapdragon 400 |
| Processor clock | 1200 MHz |
| GPU | Adreno 305 |
| Touchscreen | |
| DualSIM | |
| SIM cards standard | SingleSIM(microSIM) |
| Announced | 1Q 2015 |
| Other names | - |
| GSM frequencies | 850 900 1800 1900 |
| UMTS | 850 900 2100 |
| LTE standard | FDD LTE: 2600, 2100, 1800, 900, 800 |
| CDMA | |
| Standard TD-SCDMA | |
| UMA | |
CAMERAS - BACK
| First camera | |
| Photo matrix | 8 Mpx |
| Resolution | 3264x2448 px |
| Optical zoom | |
| Flash | LED |
| Dual-colour LED flash | |
| Video resolution | 1920x1080 px |
| Video formats | MPEG4, H.263, H.264 |
| Additional | AF |
CAMERAS - FRONT
| First camera | |
| Photo matrix | 0.9 Mpx |
| Optical zoom | |
| Flash | |
| Dual-colour LED flash | |
| Video formats | MPEG4, H.263, H.264 |
| Additional | - |
SENSORS
| Accelerometer | |
| Proximity | |
| Light | |
| Magnetometer | |
| Gyroscope | |
| Barometer | |
| Altimeter | |
| Gravity | |
| Hall-effect | |
| Iris scanner | |
| Fingerprint scanner | |
| Thermometer | |
| Hygrometer | |
Data transfer
| xHTML | |
| WAP | v2.0 |
| HSCSD | |
| HSDPA | 42.20 Mbit/s |
| HSUPA | 5.76 Mbit/s |
| HSPA | |
| HSPA+ | |
| LTE DL | |
| LTE UP | |
| WIMAX+ | |
| GPRS | |
| EDGE | |
| Bluetooth | v4.0 |
| A2DP Profile | |
| HDMI | |
| WiFi | v802.11 b/g/n |
| WiFi frequencies | 2,4 GHz |
| WiFi Direct | |
| WiFi Display | |
| DLNA | |
| Miracast | |
| WiFi hotspot | |
| IrDA | |
| USB | v2.0 |
| GPS | |
| A-GPS | |
| GLONASS | |
| Beidou | |
| NFC | |
COMMUNICATION AND MESSAGING
| Call waiting | |
| Conferency | |
| Call forwarding | |
| Push To Talk | |
| Instant Messenger | |
| SMS | |
| EMS | |
| MMS | |
| Dictionary | XT9 |
| Swype | |
| e-mail client | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | |
| RSS Reader | |
Multimedia
| Radio | |
| MP3 | |
| Stereo speakers | |
| Audio Jack | 3.5 mm |
| HD Voice | |
| Sound formats | AAC, AAC+, AMR, WAV, eAAC+ |
| Polyphony | |
| Video ringtone | |
| Ring composer | |
| Games | |
| Java | |
| Videophone | |
| DVB-H television | |
| TV-Out | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | |
| Stopwatch | |
| Alarm | |
| Calculator | |
| Currency converter | |
| Organizer | |
| Calendar | |
| Flight mode | |
| SyncML | |
| Data and fax | |
| Screensaver | |
| Themes | |
| Interchangeable covers | |
| Voice dial | |
| Speakerphone | |
| Recorder | |
| Vibrations | |