Personally, I found that iOS11 made my iPhone 6 noticeably slower. Here are a couple of examples.
1. Doing a screen shot takes at least 1/4 second to hear the "shutter" sound (sometimes up to 2 seconds). Used to be instaneous. The actual photo gets captured immediately, but the UI lag is disconcerting.
2. Apps that used to load instantly now take a few seconds to fully load. Just loading the stock calculator app has lag time before the numbers on the buttons show up.
3. General UI animations aren't nearly as smooth as iOS10. Swiping up/down doesn't quite track my finger the way it used to.
I will say that I just restored yesterday and it seems a little snappier. Can't say if the clean restore did it, or the update to 11.0.3. There's still a persistent lagginess, but not as bad as last week (on 11.0.0)
ft
1. Doing a screen shot takes at least 1/4 second to hear the "shutter" sound (sometimes up to 2 seconds). Used to be instaneous. The actual photo gets captured immediately, but the UI lag is disconcerting.
2. Apps that used to load instantly now take a few seconds to fully load. Just loading the stock calculator app has lag time before the numbers on the buttons show up.
3. General UI animations aren't nearly as smooth as iOS10. Swiping up/down doesn't quite track my finger the way it used to.
I will say that I just restored yesterday and it seems a little snappier. Can't say if the clean restore did it, or the update to 11.0.3. There's still a persistent lagginess, but not as bad as last week (on 11.0.0)
ft