Im still using iOS9...

[pdaholic]

Not on the iPhone 8.

Op is on 6s+, not an 8.

 

[Shirasaki]

Wish best luck of your iOS 11 experience. Mine is overall passable but random freezes (app don’t respond to any touch or button press except a hard reset) definitely annoys me. No new cool features except WatchOS 4 support. I definitely welcome security patches but wish them to be released separately.

 

[Jack Neill]

I am keeping my iPhone 3G on iPhone OS 2.0. I don't see any reason to upgrade.

 

[white4s]

What would you say about speed?

Much slower. This phone hasn't been the same since I first got it with whatever ios10 was on it. Each update makes it worse which is a first for me

 

[nordique]

iOS 11 runs fine on my 6s

It’s just as fast as iOS 10 but it is definitely buggy. iOS 11 is buggy on my X as well.