My 5.5" 6s Plus is driving me crazy. I just can't take the size anymore. I was okay with it at first, but I've slowly come to realize how annoying it is when I need to use it one-handed. I never thought I used my phone one-handed as much as I do. Here's the issue. I have $330 left on my EIP. I know I could go to T-Mobile, trade my 6s Plus in and get the 6s, but they would charge me $100 since I need the 64GB and then my EIP would start all over again. Would it be better if I somehow sold my 6s Plus on my own and put that money toward the 6s? That way my EIP balance would be lower if I wanted to buy the phone outright and skip the 7.