Nexus 5 ringer to work even on silent ?

[skronk]

Hi all,
I like to put my phone on silent overnight so I cannot hear incoming emails and texts. However, having 2 elderly and infirm parents living quite a distance away, I would like the phone to ring in case of emergency. This would be brother, sister, care home etc. Selective numbers so to speak. I can't find a way to do it on the phone, but note there are many apps that suggest they may work.

Any recommendations please ?

Regards

 

[B. Diddy]

Ta-dah! Call Filter Alarm

 

[bulletmark]

Do Not Disturb app.