Table 3: Percentages of time spent on iPhone applications from both self-reports and actual usage.

DurationFrequency
Self-report
mean %
Actual usage
mean %
Self-report
mean %
Actual usage
mean %

SMS26%14%32%27%
Phone17%16%11%14%
Email19%4%21%10%
Web18%6%19%6%
Other20%61%17%43%