Hi. My phone (a Samsung E900) got blocked cos I got the pin code wrong three times (for that sim card). When I put another Virgin chip in, it works fine.I had T-mobile before, but now it got locked, I use Virgin. I want to go back to T-mobile, cos its cheap, but can I transfer the 10 quid credit from one T-mobile pay and go chip to a new one?Unfortunately, the voucher code was thrown away months ago becaue I didn't need it anymore, and I've already used some of that 10 quid up on my old phone.ThanksPS... When I put my Tmobile chip in, the Samsung E900 says PUK disabled, Card blocked. Any tips?