If you have owned an iPhone or iPad for a few years, you may have apps that are outdated. Since 2013, Apple has been asking developers to update their apps. When iOS 11, the next version of the iPhone operating system, is launched soon, older apps may not work on it. Beginning with the iPhone 5s in 2013, iPhones have come with 64-bit processors. Earlier iPhones had 32-bit processors. Apple has been asking app developers to update their apps to 64-bit from 32-bit since the iPhone 5s was launched. In January of this year, users of the 32-bit apps saw warnings when they opened their apps that the apps needed to be updated.