I have a lg l90 and i just got lollipop. I after got root for it with the one click rook for lg. At first when i turned in my phone it said android updating which is weird because i was fully updated but i still got to my home page. i was using my phone for about 5 minutes and then the screen goes black exept for the pull down task bar at the top of the phone and then it goes back to my home page. This hapenns again like 3 seconds later and then again. Finally the fourth time the sceen stayed black (exept for the task bar on top) and then i couldnt do anything but hold the power button down or take the battery out. Every time this same cycle repeats and i have no clue what to do can somebody please help me. If theres anything else you need to know ill say in the comments.
