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

Duration Frequency Self-report mean % Actual usage mean % Self-report mean % Actual usage mean % SMS 26% 14% 32% 27% Phone 17% 16% 11% 14% Email 19% 4% 21% 10% Web 18% 6% 19% 6% Other 20% 61% 17% 43%