So I went to the store today to get my phone replaced due to multiple issues. Upon talking to my first tech I mentioned to him how I have had a ton of ios11 issues from when I delete calls in my call log how it crashes to the home screen, multiple issues system wide where it crashes back to home screen, phone rings and I can hear it ring but do not see anything on home screen until the third ring, overall very slow OS and lags a lot. I was told by multiple techs that even on their own phones they have been having many issues and wonder why Apple is taking so long to fix things which look simple. Its just not as snappy as ios10.