I've already posted here previously about my S21 ultra (256, exynos) heating up like an oven with poor camera performance as a result.
Replacing to a second unit did not result in significant improvement.
What's obvious is that some people seem to report almost no overheating at all. I began to think all those were people who did not use smart-switch from an old device and were using it fresh. So I decided to test that theory, but instead of doing a factory-reset I went through the everything on the phone to try and get it close to new as possible.
I removed more than 50 apps, deleted hundreds of SMS, deleted thousands of photos and videos and deleted many files I had downloaded over the couple of years I had my S10+.
The result was very impressive - benchmark test (geekbench, 3Dmark) scores went up ~30%, camera stutter improved significantly and a 15 minutes video resulted in battery temp. of 42 celsius. Before it was easily ~46-47 celsius with obvious performance throttling.
Strange. This strengthens my belief the problem is a software one that is made worse when the phone is clogged up. I have a feeling this will be fixed in the near future. For now, I urge you to try and clean up your phone. And for those of you who haven't purchased an S21 ultra yet, I say - wait a couple of months until this issue is resolved.
