Why does my alarm go off but no sound iPhone?

I’ve faced this issue before, and here’s how I managed to resolve it:

1. Check Volume Settings: First, make sure your ringer volume is turned all the way up. Sometimes the alarm uses the ringer volume rather than the regular volume.
2. Disable ‘Do Not Disturb’: Even if you’re sure it’s off, double-check the ‘Do Not Disturb’ settings. If it’s scheduled or turned on manually, it can mute alarms.
3. Update iOS: Sometimes, software bugs can cause this issue. Make sure your iPhone is running the latest iOS version.
4. Alarm Sound Setting: Go to the Clock app, edit your alarm, and ensure a sound is selected. Occasionally, the alarm sound might be set to ‘None’.
5. Reset Settings: If nothing else works, go to Settings > General > Reset > Reset All Settings. This won’t erase your data but will reset system settings.

I realized that a third-party app caused my alarm to go silent. Here’s what I examined:

1. App Conflicts: Certain third-party apps that handle audio or alarms can sometimes override iPhone’s default settings. Remove or disable such apps.
2. Custom Alarm Tones: If you have custom alarm tones added from other apps, they might not work after an update or reinstall. Stick with the default tones to troubleshoot.

From my experience, sometimes your phone’s internal settings might be the problem:

1. Silent Mode Switch: Ensure the side Silent Mode switch is not toggled on. Even if it shouldn’t affect alarms, it’s worth checking.
2. Night Shift: Although usually benign, ensure Night Shift is off as it has acted oddly on my device before.

I discovered my silent alarm issue was caused by Bluetooth settings:

1. Bluetooth Devices: Check if your phone is connected to any Bluetooth devices. If it is, the alarm sound may be routed there.
2. Unpair Devices: Temporarily unpair all Bluetooth devices and see if the alarm sound returns to the iPhone speakers.

For anyone that still can’t figure it out, here’s an unusual but effective solution I encountered:

1. Recreate Alarm: Delete your existing alarms and create new ones. This reset can sometimes fix glitches.
2. Reboot iPhone: A simple reboot can solve a multitude of problems, including minor software glitches affecting the alarm.
3. Airplane Mode: Turn on Airplane Mode for a few minutes, then disable it and check if the issue persists.

My alarm issue was due to an accessibility setting. You might want to check these:

1. Hearing Settings: Navigate to Settings > Accessibility > Hearing Devices and ensure that the “Audio Routing” is set appropriately.
2. Mono Audio: Check if Mono Audio is enabled under Accessibility. Sometimes this might affect how sounds are played back.
3. TTY: Under Accessibility, make sure TTY settings are off, as this can sometimes interfere with alarm sounds.

I saw this issue on my iPhone after it got wet. Liquid can cause temporary issues even if your phone appears fine. Try turning it off, let it dry completely for a few days, and then turn it on to see if the sound returns to normal.

Sometimes it’s a hardware issue where the speakers aren’t working properly. Here are some checks:

1. Speakers: Play music or other sounds to confirm that your speakers are working. If not, you might need a hardware repair.
2. Earphones/Bluetooth: If your iPhone is accidentally connected to a Bluetooth device or earphones, the alarm might be ringing there instead of the speakers.

Sometimes unnoticed background processes cause the problem:

Background Apps: Ensure no app is interfering with volumes. Close all apps, especially music or sound-related ones, and then check the alarm again.

During one iOS update, my alarm ceased making sounds. In such cases:

1. Wait for a Fix: Sometimes, waiting for an official update can solve the problem. Apple often releases patches for such issues.
2. Apple Support: If no update is available, contact Apple Support for assistance. They might offer a specific fix or ask for diagnostic logs.