Charging/ on off issues

[Scott Sherman1]

When I plug my phone in to charge it turns itself off. It doesn't do this all of the time just sporadically. I usually plug it in to charge when I go to bed and it turns itself off in the middle of the night. This is very frustrating since I use it as an alarm clock. I also have problems getting the screen to come on when I depress the on/off button on the side of the phone. It takes several minutes of fiddling with it to get it to respond. This has been happening since I purchased it and I have been wondering if there is a setting I need to change to remedy this problem?