Not sure if you want to splurge for that newfangled iPhone 5 just yet? Well, the folks in Cupertino are now offering a handsome discount on the previous model. Thats right, the iPhone 4S will now set you back $99 with a requisite agreement, of course and the iPhone 4 is free on contract. In the midst of the all the excitement, Apple also announced that the 3GS will be discontinued.
It's my life, you're just along for the ride! 
Apple hasn’t changed. Before, the 3GS was free and the 4 was $99. They’ll continue to do this as it gives them three (plus a few more for memory upgrades) price points to compete on.
Nothing new here.
Apple iPhone 4S 32GB White current value