hi,iv just bought a second hand motorola k1 in the box ,the box says 02 on it i no nothing about mobile phones it powers up ok the screen lights up but it's blank, just put a new 02 simm in, and it's still blank even after activating, why :confused: the phone is 2 years old and not been used for a while does it need unlocking or credit putting in,or has the screen had it,