I was given international phone to use in states

[numlock2323]

I was given a Samsung S2 that was bought in Korea. But when I put my Tmobile sim card, the phone still thinks its roaming. I can receive texts but can't send them.

Is there anyway to change this? Does my carrier thinks its an international call? Please help this noob

Thanks!!!
Numlock

 

[Medion]

You'll need to go into wireless and networks and change the network to T-Mobile. Also, ensure that you put in the T-Mobile APN settings. Best way to do this is to head over to the forums of any popular Android phone for T-Mobile and kindly ask someone to get you the APN settings from their phone. A quick Google search for their APN settings got me mostly hits for T-Mobile UK.

 

[numlock2323]

Thanks!!!!!