Hello Nataliejewell2002,
We'll be happy to see how we can help with your iPhone today.
To get started, does your iPhone have iOS 16.3.1 version installed? If not, you will want to update the iPhone. Update your iPhone or iPad - Apple Support
Are you using Apple certified chargers with your iPhone? See this link for how to Identify counterfeit or uncertified Lightning connector accessories - Apple Support.
We'd like to share this information:
Your device might get warm
You might notice that your device feels warmer when you:
* Set up your device the first time
* Restore from a backup
* Wirelessly charge your device
* Use graphics-intensive or processor-intensive apps, games, or features, including augmented-reality apps
* Stream high-quality video
These conditions are normal, and your device will return to a regular temperature when the process is complete or when you finish your activity. If your device doesn't display a temperature warning, you can keep using your device.
This is found in If your iPhone or iPad gets too hot or too cold - Apple Support, along with additional information about temperatures and your iPhone.
If you still see your iPhone getting warmer than you feel it should be, then reach out to Apple Support so they can look into this with you.
Take care!