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Always on silent unless I'm on call for work and even then I generally leave it on silent unless I'm waiting for an urgent call.

I get too many calls and text a day to concern myself over them. People know I'm busy and they know I'll call them back.
 
I leave sound on all the time. Silent only when I am at work, movies, or don't feel like hearing my notifications go off. I do have DND on from 2am to 6am though. Aside from that, always on 'loud'.
 
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