<P> A patent filed in July 2013 revealed the development of a new iPhone battery system that uses location data in combination with data on the user's habits to moderate the handsets power settings accordingly . Apple is working towards a power management system that will provide features such as the ability of the iPhone to estimate the length of time a user will be away from a power source to modify energy usage and a detection function that adjusts the charging rate to best suit the type of power source that is being used . </P> <P> In a March 2014 interview, Apple designer Jonathan Ive used the iPhone as an example of Apple's ethos of creating high - quality, life - changing products . He explained that the phones are comparatively expensive due to the intensive effort that is used to make them: </P> <P> We don't take so long and make the way we make for fiscal reasons...Quite the reverse . The body is made from a single piece of machined aluminium...The whole thing is polished first to a mirror finish and then is very finely textured, except for the Apple logo . The chamfers (smoothed - off edges) are cut with diamond - tipped cutters . The cutters don't usually last very long, so we had to figure out a way of mass - manufacturing long - lasting ones . The camera cover is sapphire crystal . Look at the details around the SIM - card slot . It's extraordinary! </P> <P> On September 9, 2014, Apple introduced the iPhone 6, alongside the iPhone 6 Plus that both have screen sizes over 4 - inches . One year later, Apple introduced the iPhone 6S, and iPhone 6S Plus, which introduced a new technology called 3D Touch, including an increase of the rear camera to 12 MP, and the FaceTime camera to 5 MP . On March 21, 2016, Apple introduced the iPhone SE that has a 4 - inch screen size last used with the 5S and has nearly the same internal hardware as the 6S . </P>

Who is the cofounder of apple computers who developed the touch screen iphones