There a number of deals available for the  iPhone at the moment depending on where you live. In here we are going to focus on the two biggest ones – the plans offered by AT&T in the United States and O2 Mobile in the United Kingdom.

First up is AT&T in the US. If you are a new customer you have three plans to choose from. With all plans you must first buy the iPhone for $399 USD. You can then pick out one of the following plan options.
 
All plans include unlimited data usage on the AT&T network and all customers’ sign up to a two year contract no matter the plan.
Next, O2 offer similar plans for customers in the United Kingdom. Again, these plans feature unlimited data usage on the O2 network, but customers are only committed to an 18 month contract.
 

iPhone deals are rather limited at the moment because both O2 and AT&T have exclusive contracts to carry the iPhone in their respective countries.

http://www.applemsu.com/stores.php