Apple explains why your iPhone may drain faster after updating to iOS 26
If you have updated iOS 26, you have reflections on new features and the liquid glass look. You can also find, like me, that your iPhone does not work as well as usual. For example, I wanted to send a screenshot via WhatsApp, and I felt like I was taking eternity.
In addition to slow performance, you may have noticed a negative impact on the battery life of your iPhone. Social media is filled with publications similar to Xycron.TV on Bluesky:
Apple is aware of the problems and has published an assistance document explaining what is happening. Here is what Apple has to say about the battery life:
Immediately after completing an update, in particular a major version, you may notice a temporary impact on battery life and thermal performance. This is normal because your device needs time to complete the background configuration process, including indexing of data and files for search, downloading new assets and updating of applications.
If you meet slow performance in certain applications and features, here is what Apple says:
The new features are exciting and help you get even more from your Apple product, although some may require additional resources from the device. Depending on individual use, some users may notice a small impact on performance and / or battery life. Apple continually strives to optimize these features in software updates to ensure a large battery life and a fluid user experience.
The simple fact is that after the update, extensive indexing and optimization processes take place in the background, and these places require the processor and the memory of the iPhone, hence these apparent slowdowns, which “shake” in shape over time. There may also be a few bugs that will only be corrected over time (thanks to other updates).
When your iPhone is obviously affected after having done such a major task, it is normal to worry. Remember that this is typical and that things should come back to normal after a few hours or even a day or two. If you don’t like iOS 26 at all, you can return to iOS 18, but it is a more complicated installation than the usual method.
This article originally appeared in our Sister Macwelt publication and was translated and located in German.
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