ok, the night before last, i updated my marshmellow and i plugged the phone in and let it do its thing. So yesterday i noticed it was acting weird like if it was at 15% and i opened an app it went to 14% instantly. well it got to about 4% and i plugged it in... but it kept acting like it wasnt charging (like a broken charger wire it would charge and then stop and charge again) well i changed cords and went to bed... it is still at 4% almost 10 hours. I think that the update did this?? what can i do my phone is now off and i cant turn it on until it charges to atleast 5%!!! but it wont go over 4%!