vibration mode

e.g.1

Informing someone you have put your phone on silent

"I am in a meeting, so I have my phone on 📳."

e.g.2

Reminding yourself to switch your phone to vibrate during an event

"Don't forget to set your phone to 📳 before the movie starts!"

e.g.3

Mentioning that you missed a call because of vibration mode

"Sorry, I didn't hear your call; my phone was on 📳."