Keeping your smartphone cool is a good way to keep it performing at its best while lasting longer on battery. The KooKit can help. It is a snap-on smartphone cooler and wireless charger in one. It can detect overheating to cool your phone down to 8C in 3 to 5 minutes. It also delivers 7.5W wireless charging for iPhone 12 models.
This smartphone cooler has cooling, charging, and cooling+charging modes. It can automatically adjust to your phone to keep its temperature stable. Its fan spins at 6000-9000rpm. You can find out more here.