iOS 27 Beta 4 ― Bug Fixes, Changes, and Improvements

[HackDaBox]

Yes, pretty much the same for me, as I posted in the battery life thread: around 15-20% per day less than on 26.x.

Are you comparing 26 beta to 27 beta or 26 release to 27 beta because it’s not a fair comparison if that’s the case as it’s not polished yet and not optimized and logging everything.

 

[PsykX]

Runs well here.
Don't know why they're launching French Siri later, it worked really well in DB1. Still stuck with old Siri 😫

 

[Dust-by-Monday]

I kinda miss how UI elements would change from light to dark automatically depending on the content behind them. Now they’re just light all the time or dark all the time. Also, photos seems to be stuck in dark mode while light mode is active.

 

[martin2345uk]

Have they removed Expressive Voice settings in this Beta? Seems to have disappeared on my 17PM?

 

[roncron]

I’m having only one problem with db4: CarPlay connection with my 2025 Honda CRV. About half the time, it takes a long time to connect, or it connects quickly but disconnects later. When it disconnects, sometimes it reconnects on its own after a minute or five, other times it never reconnects. I’ve filed a feedback.

During the full run of iOS 26, and on iOS 27 db3, I had CarPlay connection issues but far less serious and less frequent than on db4.

Otherwise, things are great. Speed and stability get an A+ from me. Also, very solid battery life: I’m getting 50 to
70 minutes of active use from each 10% drop in battery charge level. That’s as good as I’ve ever experienced on this 17 Pro.

 

[one more]

I’m having only one problem with db4: CarPlay connection with my 2025 Honda CRV. About half the time, it takes a long time to connect, or it connects quickly but disconnects later. When it disconnects, sometimes it reconnects on its own after a minute or five, other times it never reconnects. I’ve filed a feedback.

During the full run of iOS 26, and on iOS 27 db3, I had CarPlay connection issues but far less serious and less frequent than on db4.

Otherwise, things are great. Speed and stability get an A+ from me. Also, very solid battery life: I’m getting 50 to
70 minutes of active use from each 10% drop in battery charge level. That’s as good as I’ve ever experienced on this 17 Pro.

I have similar problems with a wired CarPlay in DB4. Have tried everything I could think of (IPSW-reinstalling DB4, removing and adding back the car in CarPlay, force restarting the iPhone and checking different cables). No luck! Also submitted a feedback and now am waiting for DB5.

 

[TheByteSmasher]

And now my Apple Watch, which is also on the developer beta, is alerting me to the texts that I send and my AirPods even read them to me from my name

 

[s2mike]

Throughout the whole beta cycle thus far I’ve had issues forwarding photos and videos from one iMessage conversation to another. It always appears to be working with the blue progress bar under the photo/video, but ultimately always results in a “Message Send Failure”.

Anyone else?

 

[Brettka7]

I kinda miss how UI elements would change from light to dark automatically depending on the content behind them. Now they’re just light all the time or dark all the time. Also, photos seems to be stuck in dark mode while light mode is active.

I can’t say I agree. The switching threshold was too low, so the constant switching was distracting to me. I couldn’t focus on the content and instead was focusing on the UI.

 

[Brettka7]

Is the share button too low, or is it just my eyes?