IPhone 5 warranty recall program to replace any failing power buttons of iPhone 5 models which were manufactured prior to March 2013 at no cost. On August 23, 2014, Apple announced a program to replace batteries of iPhone 5 models that "may suddenly experience shorter battery life or need to be charged more frequently" which were sold between September 2012 and January 2013. The , as well as the iPod Touch (5th generation), iPod Nano (7th generation), iPad (4th generation), and iPad Mini feature a new dock connector named Lightning, which replaces the 30-pin Apple Dock connector introduced in 2003 by Apple
IPhone 3GS more favorable reviews mainly because it comes pre-installed with iOS 4. Jason Snell of Macworld praised the iPhone 3GS, saying that "the device's internal changes shines in the iOS 4 update, making the iPhone 3GS a worthwhile upgrade compared to its predecessor although a little too late compared to the iPhone 4." TIPB stated that "aside from hardware specific features like FaceTime, Retina Display, and gyroscope support, the bottom line is iPhone 3GS users are getting the same software that makes the iPhone 4 great." Shortly after the release of the iPhone 3GS, some users reported overheating of the device