The aim of the study is to develop a mobile individual atrial fibrillation management (m-BAFY) program and to evaluate the effects of the program on symptom severity, medication compliance, self-care agency and quality of life. The main questions that the study aims to answer are as follows;
* Is the m-BAFY program effective in symptom control?
* Is the m-BAFY program effective in increasing medication compliance?
* Is the m-BAFY program effective in improving self-care agency?
* Is the m-BAFY program effective in improving quality of life? In order to measure whether m-BAFY is effective, the researchers will download this application to one group's phones, and the other group will not download the application.
Participants;
* Use this application for 3 months
* Patients in the intervention group use the application at least once every two weeks.
* Fill in the symptom diary in the application.
* Clinical interviews are called for the first interview, at the end of the 1st month and at the end of the 3rd month.