Upgrading from S3 to iPhone 5? Confused about the new T-Mobile system?

I've had the Samsung Galaxy 3 for around 7 months now, and I want to upgrade to the new iPhone 5. I have a family plan with 5 people including myself. Originally, I had a two year contract with my S3 but I planned on giving it to my brother while I would get the new iPhone.

What are all the fees and how exactly can I upgrade?

Just go in and tell them what you're trying to do. They'll tell you the best way to make it happen.

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