Why your iPhone is slow after downloading iOS 15

Does your iPhone feel different after downloading iOS 15? Which can. In this article, we’ll explain how a new iOS version will affect your iPhone. Of course we also consider possible solutions.

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Why is my iPhone slow after downloading iOS 15?

Before that, you should know a thing or two about updates in general. Apple releases two types of updates for the iPhone: interim and version updates.

As the name suggests, interim updates are relatively small. They add a feature here and there, fix an annoying problem, and tweak the look of an app. An interim iPhone update is not very exciting, however.

This does not apply to a so-called version update. Simultaneously with the new iPhone, Apple releases an annual version update. This introduces several new functions, we get to see new apps and (sometimes) fundamental things change in the operating system.

Why iOS 15 is causing problems

Since last week you can download iOS 15, the iPhone update of 2021. It is almost every year that people notice that their device behaves strangely after updating. For example, your iPhone responds slower than usual, apps don’t load as smoothly as usual, and you notice a small stutter when typing messages.

This year is no different. iOS 15 also causes the necessary problems, according to messages on websites and social media. The big question is therefore: how is this possible?

The simple answer is: because your iPhone is still updating. The ‘update screen’ may be closed, but your device is still busy in the background. For example, individual apps are completely prepared for iOS 15 and your important data transferred from iOS 14.

Also read: 9 tips to make your iPhone (and iPad) faster


Fortunately, the solution is quite simple in most cases. By simply giving your iPhone overnight, most background processes are completed in the morning. Do not forget to place your device on the charger, because performing a version update consumes a lot of power.

Does your iPhone still feel sluggish, even after a few days? Then there may be more to it. For example, try updating your apps. Application developers should update their apps when Apple releases a new iOS version. You can check whether there are updates for your installed apps via the App Store. Simply tap your Apple ID, scroll down and tap Update.

It can also sometimes help to disable ‘Background Refresh’. This function ensures that your frequently used apps are always up-to-date by retrieving new information (such as messages) in the background. Go to the Settings app, tap General, then choose Background Refresh to turn the feature off.

Also useful: Update iPhone: this is how you install the latest iOS version

More about iOS 15

iOS 15 adds all kinds of new features. For example, the Messages app and FaceTime are given a new look. Apple also brings all kinds of privacy measures to your iPhone, so that you can hide your IP address, for example. In the video below we take you through all the new features:

iOS 15: These 7 New Features Coming to Your iPhone This Fall

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