How am I charged when NOT on T-Mobile's network & can I use my phone abroad?
1. TMobile's site says unlimited talk, text, data while on TM's network but does not specify what happens when you are not. Whose network would I be on? What are the charges (e.g. TM + the host network - does TM have a negotiated off network rate - something else)?
2. I travel to Europe and Asia occasionally. What happens when I do? Can I use my phone (I'm thinking about a Nokia Icon) ? Does TMobile have any overseas agreements or am I subject to super high rates reserved for tourists?