My last one was 10 pro and battery is essentially dead after 2.5 years of usage. Can't make half of a day, literally unusable, and I'm not a big phone user. Case is made of some really good material, which feels very premium, but runs son fckn hot that you can't hold it in your hands anymore, this is especially true during hot summers, and it got only worse with the last major OS update. This is a heat dissipation issue caused by the materials used, large battery, and hi performance CPU cores so I don't think my case was any special than the others.
I see that the OnePlus 15 follows the same route, and although it has good reviews, and they claim they solved the battery heat dissipation and detoriation issues with some new kind of cells, it seems that it still runs hot according to some reviews I've seen on the yt.
Before that I had OnePlus 7 and more budget friendly Nord, and they were much better than 10 Pro, although 7 shared similar type of issues as 10 Pro. Nord is a bit different because case is not premium, and the battery is not so large, and the CPU is not premium nor the supercharging as well. However, it doesn't run hot and battery after few years of usage is still able to give you a full day without the problem.
I'm pretty convinced that all their flagships with hi performance CPUs, premium case, large battery, and fast charging suffer from the same issues.
Maybe mixed CPU core architecture is an answer to that issue, which might suggest why is so prevailing in other phone manufacturers but I have not dig that deep into the topic
> it seems that it still runs hot according to some reviews I've seen on the yt.
Never noticed it being even warm in normal use, consistently cold.
> this is especially true during hot summers
Sounds like not a phone problem -- very high screen brightness and/or direct sun would make any phone hot.
I am not an idiot, I am not keeping my phone on direct sunlight neither do I run on "very high brightness". The phone runs hot on normal circumstances, and in summer when the temperatures are getting higher it becomes unbearable. I hope you understand now.
I've misread that you're having consistent problems across different models, sorry.
If it's just 10 Pro, then google says Qualcomm was having bad years (I've heard about Snapdragon 888 fiasco, but apparently it extended to 8 Gen 1 in OP10)
Oneplus 15 uses a Si/C battery like other higher end Chinese phones currently. It doesn't get hot during normal operation (I don't play games on it) and since I don't use fast charging, for now it looks like it will work for a long time. Still get easily 2 days on a 80% charge.