I'm currently on T-Mobile prepaid using an unlocked iPhone 5, and have been thinking about getting a plan lately with the iPhone 6. Which one do you think is better? Should I stay on prepaid? I'm currently on a 30 dollar plan per month, which only gives me 100 minutes per month, unlimited text, and the first 5gb at LTE speed. I rarely use all my minutes, so I don't know what to do. I would like to get the contract free iPhone, but don't want to pay the full price. Would I be able to pay part of it with T-Mobile, and pay month by month or is that only for customers with a plan?