I have googled but not come up with anything other than talk of jailbreaking but I don't actually know what that means.
So anyway, my new job involves night shifts on the rota, so what I would like to be able to do is put my phone on silent during the day so that I can sleep, but allow important numbers - eg the DCs school to ring so that I can deal with emergencies.
Anyone any ideas how to do it please?