Primary Camera
8 MP
Selfie Camera
1 MP
Microsoft Lumia 640 Dual SIM - now you know
Lumia 640 Dual SIM was announced by Microsoft in 2015
Dimensions and screen
Microsoft engineers made Lumia 640 Dual SIM as 72.2mmX141.3mmX8.8mm.
You can buy the device in glossy cyan, orange, white also matte black.
Screen on Lumia 640 Dual SIM maiden using tehnology IPS LCD capacitive touchscreen, 16M colors, at a moment Lumia 640 Dual SIM had display larger size than only 45% of devices in mobile market, by it's 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio) display supporting resolution 720 x 1280 pixels ratio is 16:9 and density 294 PPI multitouch is supported, regarding screen protection they can mention that it's corning Gorilla Glass 3. Few more details regarding display
I/O variants
Lumia 640 Dual SIM supporting networks EDGE, GPRS, 2G and 3G. Performance is about HSPA 42.2/5.76 Mbps, GSM / HSPA.
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.
Additional
Few features on the Lumia 640 Dual SIM are - MP3/WAV/eAAC+/WMA player - MP4/H.264/WMV player - OneDrive (30 GB cloud storage) - Document viewer - Photo/video editor.
Regarding autonomy of this model, it is Removable Li-Ion 2500 mAh battery.
Accelerometer, proximity, compass sensors are supported on this Lumia 640 Dual SIM.
About camera on Lumia 640 Dual SIM
The phone got 8 mp sensor with perforation of lens f/2.2 with focal length 28mm. Few another extra charateristics are autofocus, LED flash. Video recording on main camera of the Lumia 640 Dual SIM is available with 1080p@30fps options. This is not bad for instance one of available devices at the moment, Microsoft Lumia 640 LTE, In Lumia 640 Dual SIM engineers decided to empower with 8 million pixels lens and lens has f/2.2 opening and focal length 28mm. And another additional traits are autofocus, LED flash. Video on main camera of the Lumia 640 Dual SIM is available with 1080p@30fps options
This time Microsoft engineers decided to empower with 8 MP selfie camera. Some another additional charateristics are 720p.
Under the hood
This model contains processor Quad-core 1.2 GHz Cortex-A7, based on chipset Qualcomm MSM8926 Snapdragon 400, Taking into account Microsoft Lumia 640 Dual SIM rank graphic card on this device is Adreno 305.
Capability on this device is 8 GB, 1 GB RAM, microSD is supported microSD, up to 256 GB (dedicated slot), operating system is Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10.