I have a Tmobile Samsung Exhibit 4. It's been working fine for two weeks. Today a text came in, the phone lit up funny and it went black. All attempts to turn it back on fail. I have tried to reboot holding the power and the volume up buttons. I have tried just holding power and just holding volume up. I have even tried just volume down. Sometimes the phone will turn on for a second, show the TMobile Android screen, and then shut off. Sometimes I get a weird screen with the little green Android guy standing next to a picture of a file and there's an arrow coming out of the file.
Anyone have any ideas on what else I can try? I've taken out the battery and tried to start it...etc...all the basics I was able to research on Google, but nothing works.