ive just returned from France on a school trip and i had my phone on my knees throughout the journey when i went to look at the time my phone wouldn't unlock so i tried turning it off but nothing happened so i took the battery out and whenever i replave the battery back in only the express music light and the top comes on. but it does it automatically before i even attempt to turn the phone on . ive tried everything from removing memory cards replacing battery's and sims but nothing seems to work ?!?!?!?!