Short version 1. Got 2 new T-mobile sim cards off the BAY 2, Activated one (for the P506) and put in in my ROOTED LG AT&T P506 Thrive - phone did not see it ( only 911 calls with or with card ) ( card was activated online at T-Moble site) 3. Placed the card in a AT&T Motorola Razor ( which it wasn't activated for) and it works great - Phone number and all 4. I have the unlocking code for P506- can't get the phones unlocking screen to come up so I can use it. Any Ideas?