In general, the most common reason for Alarm not working on iPhone is due to users setting up an Alarm on iPhone (which is easy to do) and quitting the Alarm App without saving the changes.
Another reason for Alarm Not Working on iPhone is due to users selecting Change Next Alarm only option, while trying to make changes to their Sleep Schedule.
Selecting “Change This Schedule” ensures that Alarm works on all days of the week, while selecting “Change Next Alarm only” makes the Alarm work only for a day – Alarm won’t work on the next day.
Wake Up Alarm Not Working on iPhone
If the Wake up Alarm function is not working on your iPhone, you should be able to fix the problem using the following troubleshooting steps.
1. Disable Silent Mode
The Wake up Alarm on iPhone should ring, even if the physical Ringer switch located at the side of iPhone has been switched-off or moved to Mute or Silent position.
However, since Alarm is not working, consider disabling Silent Mode and leave your iPhone in Ring Mode for a day to rule out the possibility of the Wake up Alarm function on your iPhone being impacted due to the Ringer position.
2. Increase Alarm Volume
The problem might simply be due to the Ringtone and Alert Volume on your iPhone being set to a low level.
1. Go to Settings > Sounds and Haptics.
2. On the next screen, use the slider under “Ringer And Alerts” section to set the Ringtone and Alerts volume to a suitable level.
If required, you can disable Change with Buttons option to prevent the possibility of Ringer/Alerts Sound being set to low volume using the physical Volume up/down buttons.
3. Check Alarm Time
If you are travelling or just arrived in a New Country, the problem might be due to the Alarm Time not matching with your current location.
Also, it is not uncommon during stressful, demanding and busy periods to set an Alarm for 5-30 PM and expect it to goes OFF at 5-30AM.
1. Open the Clock App on your iPhone.
2. Switch to Alarm tab and make sure the Alarm time is correct.
4. Disconnect Wired Headphones
The Alarm on iPhone should Ring at its scheduled time, even if your device is connected to wired or wireless headphones.
However, in ceratin cases both wired and wireless headphones can make iPhone get stuck in headphone mode, which may have an impact on the built-in speakers.
A simple solution to this issue, is to simply discoconnect the wired speakers by pulling them out and disconnect wireless speakers by switching OFF Bluetooth.
1. Go to Settings > Bluetooth.
2. Move the Slider next to Bluetooth to OFF position.
5. Did You Select A Proper Alarm Sound?
It is possible that the Alarm sound that you selected is simply unable to wake you up or causing a confusion in your mind.
This can happen, if the Alarm Sound on iPhone is set to Birdsong (see below) or any other natural sound and you somehow end up relating the Alarm to Birds chirping outside and other sounds from nature.
1. Open Clock App > switch to Alarm tab and tap on the Change option.
2. On the next screen, scroll down and tap on Sounds & Haptics option.
3. On the next screen, select you desired Alarm sound and tap on the Back button.
4. On Change Wake up screen, make sure that you tap on Done to save the changes made to the Clock App.
6. Delete Unecessary Alarms
Delete all Alarms from your iPhone and see if this helps in fixing the probkem.
1. Open Clock App > switch to Alarm tab and tap on the Edit option located at top-left corner.
2. On the next screen, tap on the Red Minus button and then tap on the Delete option that becomes available.
3. Make sure you tap on Done to save this change on your iPhone.
Repeat the above steps to delete other Alarms (if any) and Add a New Alarm that you want to use by tapping on the Plus Icon (top-left corner).