Share your experience!
I have aan Experia Z5 Premiun. I continuosly get messages tha my phone is overheating and apps are using too much cpu what do I do?
You might have installed a lot of apps that work in the background, restarting your phone every while could help, and reducing the number of background apps can help too. You can go and uninstall any apps you don't use anymore.
If the problem persists, you can reset or perform a software repair using Xperia Companion.
