Reason: To navigate to the Timers section where I can change the ringtone. Action: Tap on element with ID 11.
Reason: I need to select the existing timer (01:00) to change its ringtone. Action: Tap on element with ID 5.
Reason: I need to select the option for 'When Timer Ends' to change the ringtone to Daybreak. Action: Tap on element with ID 8.
Reason: To select the 'Daybreak' ringtone for the timer. Action: Tap on element with ID 15.
Reason: I need to confirm the selection of the 'Daybreak' ringtone by tapping the 'Set' button. Action: Tap on element with ID 4.
Reason: The ringtone has been successfully changed to 'Daybreak', completing the task. Action: Terminate the session.