Same with me.
iPhone 6S Battery Drain and Overheat problems after iOs 13.1.2 update.
After I updated my iPhone 6S to iOs 13.1.2, whenever I turn ON the WIFI(Connected or Not Connected), the battery drains so fast, also at a certain point the phone overheats displaying a message alert "Temperature - iPhone needs to cool down before you can use it".
So now, just using my phone without connecting to the WIFI.
Is apple aware of this issue?
When are they going to resolved this? on the next update?
This is very frustrating, I want to revert my iOS to 13.1.1, can I officially do it without losing my data on my phone?