Why is my phone Getting warm under normal use ok

Hello ginnie80,

Welcome to Apple Support Communities. We understand the concern with your iPhone getting warm under normal use, and we'd be happy to look into this with you.

When the iPhone is in use or when the battery is charging, it’s normal for it to get warm. There are some situations when your iPhone feels warmer, such as after a software update, or when using graphics-intensive apps or features. However, the iPhone has the ability to protect its internal components if the interior temperature exceeds the normal operating range. Have you received any temperature warnings? If not, is there a case on your iPhone? If so, we’d recommend seeing if you notice any difference without the case.

Please check out this helpful link:

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

We hope this information is useful. Kind regards.