Iphone 13 pro Volume buttons not working if on phone call and held to your head.

What iOS version did you update last?

Many users who have updated to iOS 16 and above must have a similar issue if the issues stated by you are due to the iOS.

Unless you state what the issue is many in this forum may not be able to respond positively to the issue you are facing. 

With the limited information that you have provided, It is hard to even guess the problems faced by you. 

You may get faster and better responses to your query by --> Writing an effective Apple Support Commun… - Apple ...

Please re-post with detail so that someone else can help.

If a button or switch isn't working on your iPhone or iPad · Remove any protective films or cases that might block the button or switch. 

If a button or switch isn't working on your iPhone or iPad

Please update to iOS 16.1.2