Recent content by Nahk786

Can I enable VoLTE on my RM-1075-1004 Microsoft Lumia 640 LTE Dual SIM by choosing the Developers Mode available in Settings>Update & Security>For developers ?

The battery drain was a universal issue and MS released a firmware upgrade which has solved the issue and now the battery drainage has been plugged. Windows Version/OS Build 10.0.14393.693 Version: 1607 Firmware revision number: 02177.00000.15184.36002 Just check for updates in Settings>Update...

Try using a 5V/2A or 5V/2.1 Amp branded charger along with a short quality USB cable. The 2500mAH battery in Lumia 640 should get charged in about an hour and 10 minutes with a 5V/2.1 Amp charger.

MS diversified to B2C mobile model to find if there's any future prospect to their profits but were too late an entrant in the eco-system already ruled by open OSes like Android. Hence, back to the B2B model while leaving the C from B2 wanting for support.

download the UPGRADE ADVISOR app from Windows Store and use the app to find out if an upgrade is available. You can download the 3GB Windows10 Mobile update.

Download the 'Windows Phone app for desktop' and use the B2X app an official outsourced support helpline by Microsoft with a live chat.option with humans not bots.

It does support 4G/3G on both of the SIM slots however only 1 of the either slots can be enabled for 4G/LTE while the other SIM would switch to only 2G network