Edited by dezil at 2017-3-3 00:22 \n\ni have a umi super and is on nougat 7 . when i receive a call the screen do not show anything . It stays black with the ringtone ringing . So i cant see who is calling .
Please help because it is driving me nuts .
Thanks in advance .
Please perform factory reset (settings - backup and reset - factory data reset)
You can also try flash system with SPFT
Here is SPFT updating instruction but please skip 6th step as you need overwrite all partitions http://community.umidigi.com/forum.php?mod=viewthread&tid=11
And here you have all available ROMs http://community.umidigi.com/forum-134-1.html
Also if you are not happy with Android 7.0 you can comeback to previous version using SPFT.