iOS 27 battery life thread.

[vbctv]

iPhone Air still indexing after 6 days… But today battery health went to 99% after 224 charge cycles…
Hopefully battery life gets better after indexing is complete because so far battery life is worse on iPhone Air…

 

[makoru]

iPhone Air still indexing after 6 days… But today battery health went to 99% after 224 charge cycles…
Hopefully battery life gets better after indexing is complete because so far battery life is worse on iPhone Air…

I have an iPhone Air, I think that from what you say, I'll better wait for more stable betas in battery performance...

 

[whateverest]

Sorry, but this whole thread is nonsense. Beta versions do have several features enabled, not only a single indexing round, but reports and data collectings which support the developers finding bugs. You cannot estimate half way battery consumption for final release with a beta release.

 

[FeliApple]

Sorry, but this whole thread is nonsense. Beta versions do have several features enabled, not only a single indexing round, but reports and data collectings which support the developers finding bugs. You cannot estimate half way battery consumption for final release with a beta release.

The thread always starts when the beta is released and continues when the final version is released.

 

[vbctv]

Sorry, but this whole thread is nonsense. Beta versions do have several features enabled, not only a single indexing round, but reports and data collectings which support the developers finding bugs. You cannot estimate half way battery consumption for final release with a beta release.

Yes we know debugging and alot of other stuff are enabled, but those of us who run betas all the time, can get an understanding of how battery life will be. Debugging and those other things do use a small fraction of battery and we know that. This thread is also to help those who may want to install the betas themselves or help them decide not to...

 

[FeliApple]

Sorry, but this whole thread is nonsense. Beta versions do have several features enabled, not only a single indexing round, but reports and data collectings which support the developers finding bugs. You cannot estimate half way battery consumption for final release with a beta release.

Yes we know debugging and alot of other stuff are enabled, but those of us who run betas all the time, can get an understanding of how battery life will be. Debugging and those other things do use a small fraction of battery and we know that. This thread is also to help those who may want to install the betas themselves or help them decide not to...

What @vbctv said, AND one more important thing:

When the beta process is reaching the end, there is a crucial piece of information that these threads provide: whether battery life and/or performance are good or not. Apple has given about a week to downgrade in the last two major releases. That’s not enough time to judge it by yourself, especially if you choose not to update immediately.

Most people don’t use this information and update anyway, but perhaps it can help some people on the fence.

With iOS and iPadOS 26, several threads that were active during the end of the beta process repeatedly warned that battery life had been significantly worsened, by 15 or 20%, vs iOS and iPadOS 18, and that there were noticeable perfrownde issues. This helped many people who chose not to update. Liquid Glass was the main reason in most cases, but this helped further cement the idea to stay behind for many.

Were these threads not available, people wouldn’t have the information. Discussion is always beneficial even if conditions in this case aren’t absolutely favorable.

This time, many have reported a similar battery life vs 26, which is important after devices suffered significantly with 26 vs 18 last year.

 

[goldmac2006]

What @vbctv said, AND one more important thing:

When the beta process is reaching the end, there is a crucial piece of information that these threads provide: whether battery life and/or performance are good or not. Apple has given about a week to downgrade in the last two major releases. That’s not enough time to judge it by yourself, especially if you choose not to update immediately.

Most people don’t use this information and update anyway, but perhaps it can help some people on the fence.

With iOS and iPadOS 26, several threads that were active during the end of the beta process repeatedly warned that battery life had been significantly worsened, by 15 or 20%, vs iOS and iPadOS 18, and that there were noticeable perfrownde issues. This helped many people who chose not to update. Liquid Glass was the main reason in most cases, but this helped further cement the idea to stay behind for many.

Were these threads not available, people wouldn’t have the information. Discussion is always beneficial even if conditions in this case aren’t absolutely favorable.

This time, many have reported a similar battery life vs 26, which is important after devices suffered significantly with 26 vs 18 last year.

Yes we know debugging and alot of other stuff are enabled, but those of us who run betas all the time, can get an understanding of how battery life will be. Debugging and those other things do use a small fraction of battery and we know that. This thread is also to help those who may want to install the betas themselves or help them decide not to...

Correct y’all. The truth is that we want to see how the drain differs as indexing capabilities and how Apple Intelligence + now with Siri AI, is contributing as a coefficient to battery deviations in both battery life and battery health. In essence, battery performance and time to use from charge limit/100% to the lowest point.

Logging is also another factor. If your iPhone on iOS beta runs analytics, diagnostic files for developers and the Apple engineers 🧑‍💻 to take a look at, then that pulls more battery as it gathers everything that is going on in every app.

My iPhone stopped indexing 4 days after the beta 1 was installed- 2 days after I got off the Siri AI waitlist.