Originally Posted by
blitzen
How do I set up my iPhone ( and T-Mobile account if needed) to ensure that I get the free included data etc but won't be connected to a not included network.
I.e India > Phone should connect
Bhutan > Phone should not connect (unless to the Indian carrier) as otherwise the costs are astronomical
It's not a matter of the phone connecting or not connecting. When your phone first registers in a country, you get a text message from T-Mobile. It will tell you either: a) you're in a country with free text, data, and US$0.20 voice calls, or b) you're not and have to pay standard int'l roaming rates. If it's option b), then data is disabled unless you key in and Send the unlock code which is provided in the text message. Since inbound SMS's are free, unless you key in the unlock code for data, there are no charges, as you can avoid placing/receiving voice calls and sending SMS.