The problem is that all technology is moving faster than ever. Some Chinese CEO says that Apple is doomed because they do not update the iPhone more than once a year. It is a convoluted issue that means any device over two years old is obsolete. Some Android devices, every year. And some devices are obsolete in a matter of weeks, never to be heard of again. Apple tries to walk the line between getting out more powerful devices with each version, and supporting older models.