20s
addict
addiction
addictive
asian
business
businessman
businesspeople
businessperson
china
chinese
corporate executive
east asia
hong kong
japan
japanese
korea
korean
looking
male
man
mobile phone
office worker
one person
outdoor
people
phubber
phubbing
reading
serious
singapore
singaporean
sitting
smartphone
social media
taiwan
taiwanese
text message
texting
tweeting
using cellphone
white collar
young adult