iPhone Alarm Not Working Here’s How to Fix It The iPhone's alarm is critical for waking up on time or reminding users of important tasks. However, several users have mentioned that their alarms either do not ring, ring very softly, or don't alert them at all. If you are also wondering Why Is My Alarm Not Going Off, there is no need to worry because there are several solutions to this problem. Here are solutions to make sure that your iPhone alarm works perfectly. 1. Check the Volume and Sound Settings It is possible that your alarm does not ring because your volume settings are too low or muted. The alarm volume is controlled separately from media volume by the Ringer and Alerts setting.