cellphone

Lam, quietly fierce with a booming laugh, studies the spread, and then ... his cellphone pings.

He started to record on his cellphone as several teenagers ran toward an exit with items in their arms as a security guard shouted at them.

Sheriff’s officials say on April 7, an 11-year-old boy reported that “an unknown male adult recorded him on a cellphone while he was using the restroom at the location.”

People who don’t have smartphones or haven’t installed early warning apps can still receive alerts on their cellphones — but only when a higher magnitude or greater level of shaking is projected at their location.

Geological Survey that they got an earthquake early warning — fueled by the its ShakeAlert system — on their cellphones.