From study to Factors for using mobile phone in Learning period of high school students in Chak Kham Khanathon Lamphun, Most respondents as female 52 people 52 percentage, second as male 48 people, High school students in year4: 30 people 30 percentage, High school students in year5: 41 people 41 percentage, High school students in year6: 29 people 29 percentage, All the factors are as follow Use mobile phone in the classroom because of dislike those subjects