How to flash my T-mobile iPhone 4 to Straight Talk? Using a SIM Card?

My Fiance' is buying me an iPhone 4 for Valentines Day from a girl he works with, and it's currently with T-mobile, but I have Straight Talk and want to continue using Straight Talk. How exactly can I flash my T-mobile iPhone 4 to Straight Talk? I know I have to buy a SIM Card, I just need to know exactly how to do all of it.

A T-Mobile phone will not flash. You do not have to flash your phone to Straight Talk.

You just have to purchase a Straight Talk sim card for T-Mobile phones and transfer your service to the sim card. You may have to have the phone unlocked to use it with Straight Talk.

Just go to the Straight Talk website and see if you can use the phone with Straight Talk.

You don't need to flash it. Straight talk sells a T-mobile capable sim card where you can purchase and put it in. Then you would have to update the apn.

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