Wanna share what @mkbhd said. He got it from @mrwhosetheboss. If 📱 is hot to the touch –

1. Much thermal energy is moved from the system-on-a-chip (soc) to 📱's sides and back. Then 📱's sides and back are touching the lower-🌡️ air and the lower-🌡️ hand. Part of the design is that the air and 🖐️ will lower 🌡️ of the sides and the back.

2. Or, the soc is overheating and 📱 is 👎 at moving thermal energy away from the soc.

3. Or extreme overheating. 📱 is moving much thermal energy away from the soc but it isn't enough to normalize the soc's 🌡️.

The idea can be applied to 💻 and 🖥️. if 💻 or the desktop's case is blowing notably high-🌡️ air –

1. great cooling system (fans, heat pipes, vapor chambers)

2. or extreme overheating (the cooling system is doing its best but not enough)