Can I use my family mobile (T mobile) sim card on the iPhone 5?

I know that you have to trim it down so it'll fit. Also, if i accidentally break my family mobile sim card could I get a new sim card from T mobile? Or can I just buy a nano sim card from T mobile and have them transfer my family mobile account to that card?

Added (1). Has anyone actually tried it?

Added (2). The iPhone from Verizon comes unlocked and T mobile should be releasing a nano sim this month.i'm just trying to figure out if I can have my account changed from my family mobile sim card to a T mobile nano sim because family mobile is sponsored by T mobile.

You would need an unlocked iphone 5, and its very hard to trim a micro sim into a nano, tmobile doesn't sell nano sim cards.

It's not going to work because no one has an iOs unlock for ios 6 yet.

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