That's how Microsoft made their phone Lumia 640 LTE Dual SIM

Microsoft presented to the world in March 2015 their new model Lumia 640 LTE Dual SIM

And how Microsoft made camera for Lumia 640 LTE Dual SIM

8 megapixels camera is installed in Microsoft Lumia 640 LTE Dual SIM and aperture is f/2.2 with focal 28mm. Some another extra traits are autofocus, LED flash. Video camera on main camera of Microsoft Lumia 640 LTE Dual SIM is available with 1080p@30fps choices. This is quite good for instance one of available devices at the moment, Huawei Watch,

8 MP selfie camera is installed in Lumia 640 LTE Dual SIM by Microsoft. Few another additional options are 720p.

Little about performance

Microsoft Lumia 640 LTE Dual SIM runs on processor Quad-core 1.2 GHz Cortex-A7, having chipset Qualcomm MSM8926 Snapdragon 400, Taking into account Microsoft Lumia 640 LTE Dual SIM category video adapter on this model is Adreno 305.

Memory on Lumia 640 LTE Dual SIM is 8 GB, 1 GB RAM, external card slot is supported microSD, up to 256 GB (dedicated slot), under the hood is Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10.

Dimensions and screen

Lumia 640 LTE Dual SIM by Microsoft has size 72.2mmX141.3mmX8.8mm.

Microsoft Lumia 640 LTE Dual SIM is available in 3 colors, which are glossy cyan, orange, white finally matte black.

On Lumia 640 LTE Dual SIM is built using tehnology IPS LCD capacitive touchscreen, 16M colors, on that point Lumia 640 LTE Dual SIM was winning only 45% devices available by screen size, having 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio) screen with resolution 720 x 1280 pixels proportions are 16:9 and having density 294 ppi supporting multi touch, about screen protection they can highlight that it is corning Gorilla Glass 3. Other info about screen

• ClearBlack display

Connectivity

Lumia 640 LTE Dual SIM has networks EDGE, GPRS, 2G, 3G and LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 28(700), 38(2600), 40(2300). Performance is about HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, GSM / HSPA / LTE.

Ports on Microsoft Lumia 640 LTE Dual SIM are GPS Yes, with A-GPS, GLONASS, BDS, USB microUSB 2.0, WLAN Wi-Fi 802.11 b/g/n, DLNA, hotspot, Radio FM radio, Bluetooth 4.0, A2DP, NFC.

Lumia 640 LTE Dual SIM features

Few features on this phone are - MP3/WAV/eAAC+/WMA player - MP4/H.264/WMV player - OneDrive (30 GB cloud storage) - Document viewer - Photo/video editor.

Related autonomy of the model, it is Removable Li-Ion 2500 mAh battery.

Accelerometer, proximity, compass sensors are supported on Lumia 640 LTE Dual SIM.