IPhone 5C the first three days, which set a record for first weekend smartphone sales, with the 5S selling three times more units than iPhone 5C. After the first day of release, 1% of all iPhone in the US were iPhone 5S, while 0.3% were iPhone 5C.<ref name="cnet iP5S/C sales 1"></ref> Commentators viewed iPhone 5C as a flop because of supply chain cuts signifying a decline in demand in October 2013. Apple CEO Tim Cook admitted that the company overstocked the iPhone 5C while having shortages of the iPhone 5S, as a result of failing to anticipate the sales ratio between both
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