This feature is not available on the device, however, you can install additional apps to limit the call time as desired.
Here's how to limit call time on Sony Xperia XZ Premium:
Step 1: Go to Play Store and download the application.

Step 2: Activate the feature.

Step 3: Adjust the desired time.

With that, your setup is complete. Wishing you success!
Explore more guides on Sony Xperia XZ Premium here.
