About battery

Hi HengPorchheang,

We appreciate you reaching out through Apple Support Communities for help with this behavior you experienced on your iPhone. We'd love to help in any way we can.

The screenshot you shared is very helpful. It indicates your iPhone isn't reporting a hardware issue, which is great news.

Since mobile devices may increase in temperature when under increased activity, what you experienced may be expected behavior. We've got a great resource to share with you that has helpful information about what you can expect to see, and tips to keep your device operating as expected.

Let us know if you've got any questions about this guide:

Keeping iPhone, iPad, and iPod touch within acceptable operating temperatures

Have a great day!