What does the unlocked and contract free (t-mobile) iphone 6 on the apple store Mean?

What does the unlocked and contract free (t-mobile) iphone 6 on the apple store Mean?

Unlocked means 'carrier free' or not 'pre programmed to work on just one carrier'. A person can switch companies without as much hassle as with one that is locked. That's why the price is so sky high. Best luck.

Yes, unlocked means that it will work on any carrier of your choice. Contract free means that you can just use any pay-as-you-go SIM card and you have no fixed monthly fee.

But yes, you will have to pay more money upfront for the phone (full device price) instead of paying a smaller amount at the beginning and paying the rest during the contract.