Will i get approved for iphone with tmobile?

Well I never had phone with them & I know they do credit checks, do you think I would be able to get a contract?

If you're asking, there must be an old problem. Depends on what and how much you are buying. They might ask for a hefty deposit. So don't go back unprepared. Happens often after the Great Recession. Just don't buy something you can't afford. They'll shut off the phone's electronic serial number and it can't be used by any carrier in the US ever again. You'll have a nice paperweight. Best luck.

Yes, iPhone is registered for T- mobile.

Yes anyone can, but if you don't have good credit you will have to put a $100 deposit separate from the phone