Is the Iphone 4s really free? It says on here(apple.com) that the iphone 4s is free?

Even the service for it it free. Is this true, is there a catch to it?

Yes, it is

No you have to pay sales tax on the original $450 cost and sign a contract.

IPhone 4S is free only with 2-years contract.

The phone itself is free, but of course the 2 year service is not.

Read carefully. The 8GB 4s is free if you purchase with a new 2 year agreement with Sprint, AT&T or Verizon Wireless (or if you're eligible for an upgrade on an existing account with one of those carriers.) The service, of course, is NOT free. You can compare the rate plans by clicking "View Rate Plans" on the right side of the Buy iPhone 4s page. You also need to be 18 to start a plan with any of these companies, so be sure to get your parents' permission before you purchase!