I moved from T-mobile to AT&T. After that I tried to copy phone#s from my old phone to new phone by first copying them to SIM (t-mobile) on the old phone. Then inserting the SIM(t-mobile) in my new phone (at&t). That didn't work as it said unrecognized SIM. So I tried other way around. I inserted my new SIM (at&t) to my old phone(t-mobile). When I started the phone(t-mobile), it told me to enter "subsidy password". WHAT DO I DO NEXT?