Dang I hope they fix this eventually. What a shame. That’s the first thing I noticed when I updated my 7 and ultimately made me go back to 12.4.1 for the time being. It just got hot doing simple stuff where it never did this before and isn’t doing currently on 12.4.1. I have and app called system status pro and it will show you the cpu usage and I periodically check it through the day just to make sure my cpu is properly idling down and on 12.4.1 it always drops down to like 5%. On 13 when I would open some basic apps and quick switch over to the system status app I could see the giant spikes in cpu usage. It would kick up to 90% really quick and then idle back down eventually but the spikes were way higher compared to what it does on 12.4.1. When I open apps on 12.4.1 it will only go up to like 55-75% depending on the app then idle back down fast. On 13 it was maxing our every time switching open new apps and hanging there for longer before idling down. I could literally put my thumb on the spot where the processor is and feel it heating up to hot with each new app I was opening. They’ve got some real bugs to work out!!! For now I’m sticking with 12.4.1 and keeping cool till I see reports of this heating up stuff going away! Sad it’s happening on the newest phones too!
Well if you think about it, the speed enhancements with app loading and such would require more CPU usage. Cant have it both ways (low CPU usage but better performance). No need to have "spare" CPU power sitting and not being used. Same as RAM, its a waste for it to sit there being emptythanks for the info and I wasn’t aware of the CPU spikes. I hope it gets fixed soon since I love dark mode and the speed improvements on iOS 13 and can’t go beck to 12.4.1. Reading these comments from other users, I seem lucky since other users have major issues that I am glad not be affected by. Is this the buggiest IOS release yet? I can’t believe IOS 13 is in this state.