Online quiz asks people to assess if they have a problem with their smartphone use . 90 % overuse or misuse their devices , according to Center for Science and Technology Addiction . 61 % of respondents in the survey said they regularly sleep with their cell or smartphone turned on under their pillow or next to their bed , and more than 50 % feel uncomfortable when they leave their smartphone at home or in the car , or when they have no service or their phone is broken . About 10 to 12 % are restricted to their homes , says organization 's director . 61 % sleep with their phones in their bedrooms , according to new research .
Online quiz asks people to assess if they have a problem with their smartphone use . 90 % overuse or misuse their devices , according to Center for Science and Technology Addiction . About 10 to 12 % are restricted to their homes , says organization 's director . 61 % sleep with their phones in their bedrooms , according to new research .