A:Answer if your paylo plan is with virgin mobile, I'm reasonably sure you can, just login to your account, click on swap device(phone etc) and follow the instructions, or call virgin mobile support, and after the obligatory phone menu jousting, you'll get a human who can easily help you. yes you'll get to keep your phone number.
as to your pics...those I'm afraid will have to be transferred the old fashioned way..via plugging it into the computer, assuming it supports this.