iOS 17 updates will likely notice a deeper iPhone battery drain today. This is normal behavior and things should stabilize within a week.
Whenever Apple releases a major update to its iPhone operating system, numerous battery complaints surface in the days that follow, especially when it comes to battery life. These are common issues that users encounter and are fairly typical for releases like iOS 17.
There are good reasons why your battery might drain faster immediately after a big update, and while this is a short-term problem for most, some may find it a long-term problem.
The immediate reason for faster battery drain is that Spotlight has to reindex all the files on the iPhone. This database is crucial for users to get quick search results on iPhone.
Reindexing all files on the device may take time, possibly several days. During this time, users may find that their iPhone is a little slower when searching and other tasks, and their battery may be drained faster than usual.
Once the new database is created, it will immediately reduce the daily processing load, improving iPhone response time. It will also stop using the extra battery for this processing, so battery life should return to typical.
In some cases, the reindexing process may take a week, although in some cases it may complete within a few days.
There is nothing anyone can do to speed up this process. As a rule, iPhone owners just have to wait it out.
And after this week, if you are still seeing severe battery drain over a period of several hours, contact Apple Support in whatever way is convenient for you and document it.
Apple won’t develop a plan to solve problems without data.
Old iPhones and iOS 17 are draining battery life
There’s another reason why an iPhone might use more battery power than usual after an update, and it could be due to a combination of new features and the age of the iPhone running the operating system.
This is not “planned obsolescence” or any similar term that is used today. Software has always been and always will be like this. As features are added and developed, they require more processing power.
As iOS introduces new features and new code over time, major updates require more processing power. This, in turn, hits the battery harder as the processor runs longer.
Newer iPhone models are still affected, but to a lesser extent. Older iPhones with slower A-series chips and smaller battery capacity may feel the effects much more severely in such cases.
Apple will somehow release a batch of high-impact updates to the operating system to reduce resource consumption, and it’s unlikely to fix this. The alternative is to not click the “update to iOS 17” button.
But if you’re reading this, it may already be too late not to.