My phone is one of the older versions. It's white and lime green. I've had it for a couple of years now and I'm starting to run into trouble. It's memory is small, it will randomly turn off ect. Today it turned off and wouldn't turn back on. It had a full battery but I tried to charge it anyway. It still wouldn't turn on. I need help. How can I fix it? Do/should I just get a new phone?? I need help ASAP!!