| Key Specs | |
|---|---|
| Release date | Mar 31, 2015 |
| Camera Details | |
| Camera Resolution | 8-megapixel |
| Camera flash | Dynamic LED |
| Camera Options | Auto HDR |
| Camera Features |
|
| Video Call | Via Skype |
| SELFIE CAMERA | |
| Selfie Cam Resolution | 1-megapixel (FF) |
| Selfie Features | Wide-angle lens |
| Screen | |
| Display size | 5 inches |
| Display dots per inch | 294 DPI |
| Display Type | IPS |
| Color Mode | 16777216 colors |
| Multi-touch screen |  |
| Touch-Screen | Capacitive |
| Display Resolution | 1280 x 720 px |
| Display's superficy | 10.68 square inches |
| Display's superficy (metric) | 271.27 square mm |
| Display finish | Corning Gorilla Glass 3 |
| Display total pixels | 921600 |
| Display features | Sunlight readability enhancements, Glance Screen |
| Performance | |
| Downloadable Applications | Via XBox Hub |
| Operating System | Windows Phone OS 8.1 with Lumia Denim (scheduled upgrade to Windows10) |
| Processor | Qualcomm Snapdragon 200 |
| CPU Cores | 4 |
| Processor Speed | 1.2GHz |
| RAM | 1GB |
| Physical Features | |
| Weight (grams) | 144g |
| Available colors |
|
| Connectivity | |
| 4G Networks | LTE |
| Head SAR value (radiation) | 1.43 *Highest value for model RM-1072 w/Kg (but some models, like RM-1075 and 1074 and 1075, score as low as 1.23) |
| Body SAR | 1.04 *Highest value for model RM-1077 w/Kg (but some models, like RM-1073 and 1072 score as low as 0.68) |
| USB class | MicroUSB v2.0 |
| Connectors | USB 2.0 |
| Storage Memory | |
| Memory | 8GB |
| Memory Expansion | MicroSD |
| Expansion Limit | Up to 128GB |
| Battery Life | |
| Battery Power | 2500mAh |
| mAh per gram | 17 mAh/g |
| mAh per display square in. | 234mAh/sqrin. |
| Messaging | |
| Voice SMS | |
| General Specs | |
| Push-to-Talk | |
| Special features | 30GB free OneDrive storage |
| Sequel to | Microsoft Lumia 630 |
| Other features | |
| Business features | Enterprise Mobile Software Suite |
| Reminders | Via Cortana |
| Included software |
|
| Location services | A-GPS, HERE Drive+, HERE Maps, HERE Tansit |
Description:
Microsoft's MWC 2015 smartphone pitch is the mid-range Lumia 640 and 640 XL, the former being a 5-inch HD Windows model that comes fully integrated with Skype and the Cortana personal voice assistant. Its preloaded Windows Phone OS 8.1 (with Lumia Denim) is bound for an automatic update to the Windows 10 operating system. The Lumia 640 is available in a 3G as well as a 4G LTE version, both of which power up from a 2500mAh battery and come with an up-to-128GB external memory support (8GB internal memory). It dons the Lumia legacy color options, including Glossy Cyan, Orange, and Matte Black.
Also known as Microsoft 640 Lumia.
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* Spec accuracy is not guaranteed. Please do a confirmation of the key specs before making a final choice. Cell phone makers do not always detail all their phone's functions, making it difficult for us to guess whether or not a specific cell phone has a specific function. If you spot an inaccuracy in this spec sheet, please let us know as soon as possible.
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