iPhone A lot of problems after updating iPhone 7 to iOS 11

[chazcron]

Did you go to 11.1 pb2 before you went to back to 11.0.3? 11.1 pb2 did not work. I had previously tried 11.0.1 and 11.0.2 but they didn't work.

I may have a line on a iPhone 7 to borrow (with 10.3.3 still on it) until I get the iPhone X.

 

[Arashdn]

Did you go to 11.1 pb2 before you went to back to 11.0.3?

Yes

 

[Feenician]

The problem lies with the lack of differences. Having only 1GB of RAM in a 5.5in device, pushing those extra pixels at a higher resolution, was enough to cause poorer performance. The phone never truly had enough horsepower in that department.

Yes, unfortunately, this is the answer. The 6+ was a bit of a mis-step, the iPad 3 of iPhones. Hopefully the optimization phase of 11.x will at least return to something like its initial performance.