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I've been beta'ing for years and ios11 is the first beta to make me want to go back yo previous iOS. I'm worried about iOS 11 on my new iPhone for the first time ever owning an iPhone.

I'm on a 6S and I agree. Ive had a 4S and 5S in the past, and taken part in various beta versions of iOS.
This is the first one where performance has been massively poor for most of the beta. Of course betas are usually buggy, but this time its exceptional.

Even now on the GM, my iPhone 6S hangs on keyboard often, regular apps freeze unlike they ever have before, and battery life is unbelievably bad.

When in battery saving mode, it's essentially unusable. The SETTINGS app freezes when performing simple tasks like turning on and off Data, or Personal Hotspot, or even the Battery Saver option itself!

I'm hoping much of these stuff is addressed in subsequent patches shortly after release. The 6S is a very powerful device. There is no excuse for rubbish performance in the Settings app fro crying out loud.
 
I'm on a 6S and I agree. Ive had a 4S and 5S in the past, and taken part in various beta versions of iOS.
This is the first one where performance has been massively poor for most of the beta. Of course betas are usually buggy, but this time its exceptional.

Even now on the GM, my iPhone 6S hangs on keyboard often, regular apps freeze unlike they ever have before, and battery life is unbelievably bad.

When in battery saving mode, it's essentially unusable. The SETTINGS app freezes when performing simple tasks like turning on and off Data, or Personal Hotspot, or even the Battery Saver option itself!

I'm hoping much of these stuff is addressed in subsequent patches shortly after release. The 6S is a very powerful device. There is no excuse for rubbish performance in the Settings app fro crying out loud.
You have an installation or hardware issue. My 6s is running the GM flawlessly. I can’t believe how smooth and fluid the phone runs. I also do not have issues with battery saver. Works as intended.
 
You have an installation or hardware issue. My 6s is running the GM flawlessly. I can’t believe how smooth and fluid the phone runs. I also do not have issues with battery saver. Works as intended.

That is peculiar your system has such a stark performance difference. Maybe I should assess my own device's failures.
 
I also have two 5s on iOS 11 gm. They are running better than expected for four year old hardware. All I’m suggesting is that your issues do not appear to be the norm.

If my device is an outlier that is still good to know. It does have minor charging issues, so I might hand it in for a service soon.
 
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