IPhone 6S iPhone 6S and 6S Plus. On March 31, 2017, the iPhone 6S and 6S Plus were released in Indonesia alongside the iPhone 7 and 7 Plus, following Apple's research and development investment in the country. The iPhone 6S, iPhone 6S Plus, and iPhone SE were the last iPhone models to feature a standard 3.5 mm stereo headphone jack. The iPhone 6S is nearly identical in design to the iPhone 6. In response to the "bendgate" design flaws of the previous model, changes were made to improve the durability of the chassis: the 6S was constructed from a stronger, 7000 series
IPhone 4S announced, it was considered by some media to be a disappointment, due to the expected release of an iPhone 5. There were no external differences between the iPhone 4 CDMA model and the , with the exception of a SIM card slot on the . All changes were internal (slight external differences between the iPhone 4 GSM model and the exist, as said differences existed between the CDMA and GSM models of the iPhone 4). On September 10, 2013, the iPhone 4S name was re-stylised as iPhone 4s, using a lower case 's' to reflect the names of the newly