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Given that iOS 12 really hasn’t got that many features and you’d struggle to distinguish it from 11 at first glance, I’m betting that the vast majority of apple’s dev resource is working on ‘behind the scenes’ changes.

So I guess something quite significant was made live in this week’s beta that didn’t quite work out right...
 
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After about 30 minutes performance is back to normal for me. Still seeing the notification for an iOS update that won’t go away but app performance is fine now.
 
Hopefully all these bugs are worked out before the release of the X plus next month.
 
10.5 on beta 7 is fine here never noticed the issues people mentioned. After install never had a delay on apps opening etc. wonder if it was only a iPhone related issue. But glad they acted fast to pull it and get things worked out. As people said thats why there is a dev image and then public, so if there is a problem with the dev it can be stopped before it hits the pubic beta train.
 
I've been noticing performance issues on the most recent DP (iphone 8+). Settings screen takes a while to launch and crashes when on phone call.
 
Beta 7 was very sluggish on on iPhone X as reported here, but it cleared up after 10 minutes. However, the settings icon still says there is an update available.
 

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Apple accidentally released the code making all iPhone devices slower. Once iOS 12 is released they'll activate this on all devices that they deem old, i.e.: iPhone 7 models and older.
I'll keep iOS 10 on my device thank you.
 
Performance issues could really mean security issues they don’t want to disclose. Has anyone ever thought that maybe some of these beta’s could be exposing data to 3rd parties without your consent because you don’t really know what these betas are doing in the background, from banking apps to all kinds of apps and website scripts.

Are all these betas really as secure?
 
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