 Grade of high school at Time 0 (00-year-old)                                           Mobile phone use                                     00.00 ± 0.00     00.00 ± 0.00      0.00 \*\*\*   Mobile phone addiction                               00.00 ± 0.00     00.00 ± 0.00      0.00 \*\*\*   Depression                                           00.00 ± 0.00     00.00 ± 0.00      0.00 \*\*\*  