How to deal with a hot smartphone

Doesn't your smartphone get hot when you're gaming? Especially in the summer, smartphones get hot, and it's natural for them to exceed 40°C. This time, I want to write about how to deal with a hot smartphone, listing the pros and cons. However, please note that this is all my personal opinion and does not guarantee effectiveness. *All of the following assumes the smartphone's cover case has been removed. [Attach a 10-yen coin to the back panel] Attach it with masking tape or the like. Pros: Anyone can do it easily, personally effective quickly and reliably, no condensation on the phone. Cons: Difficult to attach, noisy, honestly a hassle to do every time. *Honestly, the most effective and best method is to turn off the power and arrange 10-yen coins on the back. [Smartphone cooling sheet] Pros: Many can be used with a smartphone case, no condensation on the phone, wide variety of types. Cons: Sometimes ineffective without using other products, a slow-acting type rather than immediate. [Smartphone cooling cooler] Pros: Can be used while gaming, wide variety of types, effectiveness varies by product but is generally decent. Cons: Expensive, the cooling cooler itself carries a risk of ignition.