Cut phone sim card to fit iPhone 4?

Ok so I have a Sony erricson phone with AT&T. I also have an iPhone without a sim card also from ATT. I was just wondering if I cut my Sony erricsons sim card to fit my iPhone 4, will it work?

I'm asking because I know for iPhones you need a data plan or something. I just want to use my iPhone for calling and texting. I don't have Internet connection on my current plan.

Is working with cut cart but not perfect.

Don't you will mess up your chip download it to your computer/laptop and then onto your I phone don't cut it rate me please xxxxxxx. Xxxxx

It should work seeing as both phones are for AT&T but they will apply a data plan to the SIM once it is in the iPhone.

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