Mobile alarm clock is an app that many people rely on. If the mobile alarm clock doesn't sound, many office workers are likely to be late. So, what is the reason why the mobile alarm clock doesn't sound? What should I do if my phone alarm clock doesn't go off? There are several main reasons and solutions for the alarm clock not ringing on mobile phones:

1. Confirm that the time is set to the desired alarm time.

2. Confused morning and afternoon. Some mobile phones only display morning and afternoon alarms, which can easily be set incorrectly. Remember to set it to noon when there is a strong sun at 12 pm.

3. The date was not accurately selected. If you set an alarm after 12 hours, you need to select the day of the week as the "repeat" date in the alarm. After selecting a recurrence period, the alarm will sound every week until the specified time.

4. The situation where the alarm clock cannot hear sound:

(1) The ringtone and vibration of the alarm clock have been selected as "None", so that no sound can be heard when the alarm is activated;

(2) Only the vibration was turned on, and the ringtone was turned off;

(3) The alarm volume is too low to wake up. When selecting an alarm ringtone on a typical mobile phone, press the volume button to adjust the sound volume (the volume of an Apple alarm is the same as the ringtone volume, and adjust the volume in the "Notification" - "Sound and Touch" - "Ringing and Reminder" section).

5. After setting or changing the alarm, if you do not click save/complete, the alarm will not be saved successfully.

6. The alarm switch has been turned off. The alarm clock of a typical mobile phone has a switch bar on the right side. If there is no color, the alarm clock will not sound and needs to be clicked to turn it into a colored state.

7. Confirm that the phone is not turned off. Some phones, such as Apple phones, do not sound an alarm when turned off.

8. The phone runs out of battery, and in this situation, the phone alarm will not sound.

9. Mobile system issues. Sometimes a problem with the mobile phone system can cause the alarm to not sound. In this case, you can choose to reset the phone to solve the problem.

10. Software incompatibility. When there is a conflict between the software installed on the phone and the system software, it may cause the phone alarm to not sound. The solution is to find the incompatible software and delete it.