I'm really confused. I turned off my phone last night, and htis morning it wouldn't turn on. So i put it on my charger - nothing. i take out the battery while its on the charger and the phone's lights come on - the blue one and the screen light up. When i put the battery back in it starts up and charges, so later i turn off the phone and now it wont turn on again. my method from the first time wont work and i cant figure out waht to do. Help me please!