Hi
I installed iOS 11 Beta last night and have had a play around with it on my iphone 7 Plus. First impressions, it can be somewhat slow and clunky. I've had the phone dialer screen freeze up and become unresponsive on a few occassions. Last night I'd noticed the screen brightness getting brighter on its own. Closing a webpage in Safari is sometimes unresponsive. I'm still getting used to the new Notifications Screen.
I know its a Beta but I would have thought it would have been a bit more slick than this. For me the first iOS 10 Beta seemed to rum more smooth. Anyways, I'm sure iOS 11 will only get better with each Beta before the Official launch in the Fall.
Thanks
Barry