Ever since 5.1.1 my note 4 has went down the drain. I have been so upset in result to the update, and have factory reset because of it, which didn't solve any issues. I use to play music, surf the Web and write essays as I was charging and never have a problem with the phone, but now, I can't even have the screen on without it dying, while on the charger!!! It won't charge from 0%-90% in 8hrs. Never had a problem, until the latest update. Someone help.