I have iPhone 7 that I bought in 2016.
The notification center is becoming extremely slow and non responsive. I removed most the widgets but the same issue.
I'm running the latest iOS 11 version (11.2.5). Restarting the iPhone solves the problem for one hour or so but then it is starting all over.
On the internet, I saw other people also complaining about the same issue with iPhone 8 and iPhone X.
Is it a battery issue? Or iOS 11 is really that bad?