Apple does a big update of iOS (the operating system that runs on all iPhones) once a year, bringing new features and interface tweaks. There are also numerous smaller point updates, with fixes and security patches; these are just as important. .

In this article we run through everything you need to do to update your iPhone to the very latest available software (iOS 16) including what to do if you encounter problems, like not having enough space or not being able to connect to Wi-Fi.
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