I switched out my SIM card from a Nokia to my SamsungS (it worked get on one phone but now when I tried doing the same thing to the second phone I got this message. I have been able to reboot, find my service provider...just canot get the phone to work. Whenever I try to put in any of the codes I have I get another message that reads "Not registered on network"...Help...I don't know what I did different and why I cannot get this one to work. I have been out witted by a phone