I'm having problems getting this focus mode to work on my iPhone 8. Calls from my contacts are ringing through when I want them to be silenced. My setting is to allow calls from 'allowed people only', but I don't have any allowed people and I'm still getting calls.
Oddly, there's no option to allow calls from 'no one' like there is for Work focus. But I shouldn't need this option anyway if I don't have any allowed people!
Edit: I will try adding one contact to Allowed People and hope that everyone else gets silenced. Might take me a while to be able to test this out as I rarely get calls anyway, let alone while I'm driving!