"It is? How will I be notified when your brother decides to ride his skateboard off the roof of the house if I don't have my phone with me? Besides, I set it to 'vibrate' so it doesn't make noise if someone calls me. Who told you this?"
"My teacher. Wang Laoshi."
I left in a hurry for choir. I guess I will have to wait until sunrise to find out if this information was delivered in Mandarin.
(Aside: Weirdly (to me) there was a lot of cellphone ringing during rehearsal tonight. We never hear any phones. Tonight there were three. WTH?)