T-Mobile will totally support your unlocked iPhone if you choose to use it with them. They have no obligation not to. If Apple was genuinely opposed to unlocked iPhones they would have signed up with a CDMA carrier like verizon or sprint which would make it physically impossible to activate phones whose IMEI's weren't registered to the network. Go for it, T-Mobile CSR's have been trained and are knowledgeable about what they can offer you. T-Mobile is carrying the iPhone albeit in Germany. Don't forget T-Mobile is a German owned LLC. This is getting so ridiculous.
So you can call T-Mobile up and they will troubleshoot the iPhone with you?
What does Deutsche Telekom owning T-Mobile have to do with anything? Hey throw in that they just purchased SunCom........not that it adds anything
Then throw in Vodafone owning 45% share in Verizon Wireless........yeah it is ridiculous.