If it's on contract, phone the company, and ask for a phone upgrade. They will do this cheaply, and all you have to do is renew your contract for another year. Sometimes like with mine they don't ask for your old phone back, and if they do ask for it back, just plead ignorance if they query the state of your phone. They send them to be re-furbished, and may not even pick it up as being faulty.
If you were UK based I could let you have a spare phone.

John