Well to start this my phone is pretty old I've had it for a while now I am rooted and running Megatron 6.0.4.. I've had this problem for a week now even thinking of leaving my Ultra for a new phone... Everytime I press the power button to put it to sleep I try to turn it back on but it stays stuck on a black screen I can still touch the phone and get into apps or answer phone calls but the screen is completely black I have to pull battery out and restart it... sometimes I turn it on but its still on black screen when it turns on and I have to pull the battery out AGAIN!! Have to take the battery out up to 15 times or more joust to take black screen away sometimes... I can't put my phone to sleep anymore I have to keep it on all day I need help right away don't know what to do...