Hello
I have just purchased iphone 5s contract free tmobile from apple store which delivers by nov 20 [which comes with an installed but unactivated Tmobile sim]. I may ahve to go to india for few weeks. Can i directly use Indian sim [nano sim] with iphone 5s or I need to get unlock codes from tmobile. I had chat with apple supporta nd they said, no need to activate anyting if you are using internationally, just use a compatible gsm sim and you are good to go. Depending on country lte may not be available and warranty outside us is not viable.
So please give your suggestion, i do not want to run around with a locked phone
Conversely, if it is locked, can i unlock it from India by contacting tmobile [i am not a tmobile customer]