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 instruction leaflet, but as with many newer iPod models the battery in the first generation iPhone has been soldered in. Therefore, a soldering iron is required to install the new battery. The iPhone 3G uses a different battery fitted with a connector that is easier to replace. The iPhone X features a different battery, with two battery cells, and the adhesive pull tabs are adhered to the sides instead of folded over the top, therefore making repairs a little more difficult than before. A patent filed by the corporation, published in late July 2013, revealed the development of a new