Click Here to Buy it Now at AT&T$100 (w/two-year contract)

Click Here to Buy it Now at Sprint, $100 (w/two-year contract)

Click Here to Buy it Now at Verizon$100 (w/two-year contract)

The 4S builds on the principles that made its predecessor a commercial smash. How so? By introducing a faster processor and upgrading the FaceTime camera, and sticking with the stunningly radiant Retina Display and attractive design. An iOS 6 update is also available to bring over a number of software improvements to Apple's last-gen smartphone.