I just replaced my iPhone 7 for the 13. I didn't notice a behaviour like what you described. Except for the Maps app while I had energy saver mode on.
Re:Don't kill my app
by erlendellingsen on Thursday November 23, 2023 @01:11AM
(#38389894)
Never experienced anything remotely similar as you described with either my iPhone X when I had that, or my current iPhone 12 Pro..
Happened to me many times browsing restaurants / using a map during recent trip with 13 mini. Sucks to suffer a map reload when you're on roaming data with few bars.
Even my iPhone 6S doesn't exhibit this behavior.
iOS actually kills apps in the background FAR less than it used to. If your apps are not preserving state across being killed, it’s because they’re not doing the work to make sure the app death is transparent. Perhaps they’re more tempted to forego the work because it’s somewhat _less_ essential than it used to be.
And now I am experiencing similar issues, although not as severely yet, with my iPhone 12 Pro Max. Restarting the phone seems to help but there seems to be some battery and/or memory pressure that causes iOS to kill the non-active apps.