I'm typing this on my phone, but throughout the day it has started to have issues. When I turn the screen off, it will completely shutdown and take several presses of the power button to get it to turn on. Sometimes I'll hold the power button and it will vibrate and nothing will happen, it won't turn on. I've tried pulling the battery, the SIM card while off, and the SD card while off. It continues to shut down. I never had this issue before I updated to KitKat but ever since I've updated I've experience a litany of problems. I factory restored it about two days ago so I don't want to go through that again. Any suggestions are welcomed, please help. Thanks.