For a little over 6months iv had an iPhone 3GS (brought it off of a friend at the time, but no longer friends so I'm not sure weather its stolen or purchased by her) and for maybe 4months my phone hasn't been working properly;
-its continuously been saying "SOS only" or "no service" iv restored my iPhone, downloaded new iOS EVERYTHING, even holding the home button and sleep/turn off buttons please help!
-and in Carrier Network Selection (settings) iv just tried to click the correct Carrier I'm with (Voda AU) and it prompts me with the message on the screen "Restricted Network, your selected cellular network is restricted. You can choose a different network in Settings.
*when i brought the phone off of her (she got a iPhone 4) she said it was unlocked, (we're both with Vodafone and she has been texting me off that phone when she had it) people are telling me to take it into apple to see if they can fully wipe everything off and fix the bugs in the phone itself. But i don't know weather its stolen or what, so i can't actually do that. But also i thought it could be my SIM because i locked my SIM on the iPhone, i had to put the PUK number in to use it because my SIM had a password and iv never taken it out of my old phone so over time i forgot what i set it to be but a couple days later vodafone got my information and reset the SIM and gave me the PUK number*