Have you tried hard reset?

I went from iPhone X to iPhone 15 Pro, my experience so far is just really good, I’m enjoying it a lot, just had a couple of crash app but nothing major, and I hope the battery will not deteriorate easily.

A really good battery

No notch display

Back camera integrated with the case

No lateral buttons (touch commands)

At first I ordered a 512, then canceled and got the 256, it depends on your usage, also don’t forget that this time you can transfer files straight connecting a hard disk to the phone.