Can I trade in my iPhone 5s for a 6 with t-mobile?

Can I trade in my iPhone 5s for a 6 with t-mobile?

No idea, but don't be so afraid to call t-mobile customer service to ask.

Only if you've paid off at least 50% of the 5s already. Then they only pay it off, you have to pony up the coins to buy the 6. Read your bill and call. Only way to know. Best luck.