Hey I'm selling my iPhone 6s Plus 64GB (T-Mobile). 
The Phone has been used for a couple years, But I upgreaded to the iPhone X.
There are a couple things you should know about the phone, first it does have a crack on the screen on the top left corner of the device, however it does not effect the phone in any given case, also the front camera does sometimes glitch out. Other then that the phone works perfect. shoot me a message if you have any more questions.