IPhone 5 sim card required problem?

I bought a iphone 5 but to use i need a sim card. Will a iphone 4s sim fit or nah?
Or if i go to the store & buy one will i be able to use the phone?IPhone 5 sim card required problem - 1

No, an iPhone 4S uses a micro SIM, while iPhone 5 uses a nano SIM. You need a phone plan for your phone to work.

Just use a new sim

You'd need a nanoSIM, which is not what the 4s uses (microSIM). Yes if you get a nanoSIM it should work.

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