Hi all, posting this on behalf of my SO.

She has just gotten an Xperia 5 iii and pretty much every time that she receives a phone call, after hanging up the touch screen will become non-responsive. The hardware buttons on the side still work, but the only way to get the touch screen to start responding again is to force reboot the device (vol. up + Power). 

The device was brand new, factory unlocked and all updates were installed prior to use. There are no pending updates for the phone.

The previous phone (Pixel 3) had no issues like this and the roster of user-installed apps installed has not changed.

I've tried searching around for this issue, but not really found anything. Does this sound familiar to anyone?