Your iPhone is about to get an update, but it’s a very minor one that will fix a variety of bugs that those with iOS 14.2 software may have suffered from since the start of November.

iOS 14.2.1 is rolling out to iPhones now – you may even already have it downloaded – and it focuses its attention on bug fixes rather than bringing new features to your handset.

What does the new update fix?
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https://www.techradar.com/news/ios-1421-just-arrived-on-your-iphone-and-heres-what-it-changes