I have a Nextel Motorola phone and my SIM card in it will not work anymore. So I have a SIM card from my old AT&T phone that I want to use in my Nextel untill I can get or fix my old SIM. But when I put the AT&T SIM card in it says i need to enter a Special Code. I have no idea wat this code could be or where to find it. Any help is verrrrry much appricated on either fixing my original SIM cards problem, or on finding the Special Code. thank you!