Loud interruptions are unwelcome. So, ringer on silent sometimes for smartphones. Given, proper netiquette to use the setting to prevent noise. Don’t think vibrate is silent.
Smartphone Ringer on Silent
Turn your smartphone off completely or to silent in meetings or other places that they are banned to avoid unintended interruptions.
Vibrating phones make noise. Sometimes a vibrating smartphone is louder than a ringtone. Large smartphones on the vibrate setting cause a very loud rattle when they vibrate on hard surfaces.
Vibrating phones in pockets can be amplified by metal pens. Also, the other contents of pockets make noise. Then, many things can cause a vibrating phone to be a audible distraction. So, not silent. On one hand, noisy.
On the other hand, a light alert does not make sound. But, we have to be on the look out to see it. And so, distracts us too. In any event, noise distracts people in hearing distance.
As a result, quieting our phone is a suggestion to turn it off. Then, don’t check until we get a break. Most situations allow for a break in two hour intervals.
Ringer on Silent Netiquette
Vibrate is not silent because it makes noise when it vibrates against something.