danijel479

I am currently living in Europe and can I use their sim card. Exactly in the country of Serbia, when I insert the sim card it says that the sim is not supported. So I would like you to tell me what to do because my daughter wants to use the phone.

This is Tmobile USA so does she have a Tmobile USA handset? If she does she would need to be a customer of Tmobile USA and meet the unlock requirements.