If i get a iphone and kind it unlock using tmobile service. Will it work with the myfavs?
Answers: It will not specifically. There are unshakable features that will not work the way they are suppose to. They are not that masses, but myfavs and visual voice post are a few of them. The best thing you can do is to put in the picture T-Mobile that you are using a phone that you did not get from them and ask them directly. Most plausible you will still be able to hold your favorite people, but you can't pick them as assured as on the phones that are compatible with T-Mobile.
I only want to let you know that Apple does not honor any warranty on an unlocked iPhone. Once something is out of warranty they are not exactly the most caring corporation.