Can I put my iPhone 5 sim card into my old iPhone 4?

I dropped my iPhone 5 today and the screen shattered. I have an old iPhone 4; can I take the sim card out of my iPhone 5 and put it into the 4 until I can upgrade?

No, iphone 5 sim card is Nano sim card, iphone 4 sim card is micro sim card.

Both phones have different size of sim card.So you will need to convert your sim card size from Nano sim to Micro size and check your iphone whether it's network locked or not. If it's locked means, you will need to unlock your phone. For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like http://www.unlock-zone.com/apple-iphone-4/rs5wp9/