I've got the same problem, someone have a solution ?
Here friends the solution,solved https://www.china-devices.com/topic/6637-need-help-with-my-ulephone-be-touch-2-screenbugsolved/?page=2#comment-43071
Sorry, I don't know what else you can do...
So is the phone turning on and making sound but nothing is shown on display?
yes...sometimes green/gray/black like this....see the photo
My device works just wake mod only....i do not understand why need tasker app, works without
Finnaly jb for p768 models.... I waiting this moment....