How do i unlock my iphone,so i can use other sim like t-mobile

T-Mobile or unlocked

If you need to use a T-mobile SIM into an AT&T locked iPhone, you need to unlock the mobile. You can unlock an iPhone safer and easier through remote unlocking method. You can get the remote unlocking for an iPhone 3GS from www.unlocking4u.com/apple-iphone-3gs/rs6wp9/ at affordable cost with easy unlocking instructions.

please teach how to unlock my iphone 4s china because i can't use it i forgot the password

I bought a new samsung t239,anytime I insert a sim card it reads wrong sim card.

I allso forgot my iphone passcode and i unlocked it using www.unlock-iphone.org and the good part is that now i can use my iphone on any network worldwide , i use tmobile in usa now.

Hi , I allso forgot my iphone passcode and i unlocked it using www.unlock-iphone.org and the good part is that now i can use my iphone on any network worldwide , i use tmobile in usa now.

You have to get an "unlocked" iphone which is very limited, can't have applications on it, and has other issues. So basically, no you can't just put a t mobile sim in an iphone.

Well, first off, an iPhone won't work at all with a T-Mobile SIM card. American iPhones are locked to AT&T's network -- only AT&T SIM cards will work in them.

As far as activating it with AT&T, make sure that the iPhone isn't connected to the computer while you install iTunes. Once iTunes is installed, connect the iPhone to the computer and iTunes should launch automatically and begin the activation wizard. Just follow the instructions on the screen and answer the questions.