1) what does it involve?2) do you have to pay?3)do you keep your tariff?4) can you pick any phone or is there a selection to chose from?5) can you upgrade to a different network?On t-mobile uk thanks
1) Upgrading to a different phone 2) Well you change contract do depends if you have to buy the phone 3) you get a new one I think but keep your number 4) Well when you upgrade you have to get a phone that is more expensive that your current phone 5) no you have to upgrade through your network, if you're with t-mobile I think you can upgrade to EE, but if you want to go to like 3 or something you'll have to wait until your contract ends and cancel it, and get a new one with 3 for example.
