Can a unlocked iPhone 5 use any sim card that has a data plan?

I'm planing to buy a unlocked iphone 5(which i have to pay the full price of $999), i'm currently using a galaxy note and have a data plan and was wondering if i could use the sim card that has my data plan on the unlocked iPhone?

Added (1). I mean i now have a 12gb cap on my internet for a very reasonable price and i would like to continue to have that 12gb of internet on my iphone 5 without getting a new plan

If it is unlocked, yes it will be able to use any sim card.

The iPhone 5 uses a Nano-SIM card
the Galaxy note takes a micro-SIM card

you will need to exchange SIMs or cut your SIM down to the correct size to use it in the iPhone 5.

I don't see why not.

Yes if it is unlocked.

That should work, assuming it's a micro-sim.

if you can get an AT&T iPhone cheaper… You can unlock it quite easily here: http://gsmunlocklabs.com/unlock-iphone/