Today, over a hundred thousand Hong Kongers held hands and made a human chain around Hong

Today, over a hundred thousand Hong Kongers held hands and made a human chain around Hong Kong. The human chain even goes up the Lion Rock, a mountain in Hong Kong which represents the unyielding fighting spirit deep inside the citizens.
(TITLE FROM REDDIT r/interestingasfuck)

Okay I don't wanna be the party looper here but how do they hold hands if they're holding their phones?