The screen on my 5 month old Desire has gone partially black at the very bottom, where the phone button is, and has very thin coloured vertical lines running down the lefthand side of the screen. This happened without warning. I returned it to my service provider, who tell me that it has been damaged, and is not covered under warranty. The suggestion is that I have dropped it or sat on it, neither of which I have done.
My question is, could the phone have developed a fault with the screen, or is my service provider correct and I have unknowingly damaged it? There is no physical damage to the phone, and it works perfectly well.
My question is, could the phone have developed a fault with the screen, or is my service provider correct and I have unknowingly damaged it? There is no physical damage to the phone, and it works perfectly well.

