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by Arnavion 1392 days ago
If you don't use WiFi, try turning the dip switch off. In my case it makes the phone 7-10 deg C cooler (~39 -> ~31). It'll also make your screen brighter; I can lower brightness from 25% to 0% for indoor lighting.

(This is regardless of whether you're connected to a WiFi network or not. ie just disconnecting from a network isn't enough; you have to turn the dip switch off.)