How much does an iphone 5s 16gb cost at t-mobile with no credit?

I have no credit as I'm only 18 and I heard I could pay $20/$30 a month along with the monthly phone bill, with just $10 upfront at t-mobile? Is that true?

Zero money down is only if you have "good" credit…$10 is for a sim then $27 for 24 is $658.

Don't be afraid to call t-mobile customer service to get all the details, Cheers.