Missing an alarm on your OnePlus 15 can throw off your entire day. Whether it is a wake-up alarm or an important reminder, alarms usually fail because of app settings, battery restrictions, or sound configurations. The fixes below focus on the most common causes and are easy to apply.
Why Your OnePlus 15 Alarm Is Not Going Off
- Alarm volume is muted or set too low.
- Battery optimization is restricting the Clock app.
- Do Not Disturb is silencing alarms unexpectedly.
- The alarm sound is missing or corrupted.
- The Clock app is not allowed to run in the background.
1. Check Alarm Volume
Your alarm uses a separate volume level from media and ringtones. If this volume is low or muted, the alarm may appear to fail even though it triggers silently.
Open Settings, and then tap Sound and vibration.
Tap Alarm volume, and then drag the slider to a higher level.
2. Make Sure the Alarm Is Enabled
Sometimes alarms are created but accidentally switched off. This usually happens when editing multiple alarms at once.
Open the Clock app, and then tap Alarm.
Find your alarm, and then make sure the toggle next to it is turned on.
3. Turn Off Battery Optimization for Clock
Aggressive battery saving can stop alarms from running in the background. Allowing the Clock app to run freely prevents alarms from being delayed or skipped.
Open Settings, and then tap Battery.
Tap App battery management, and then set Clock to Unrestricted.
4. Check Do Not Disturb Settings
Do Not Disturb can block alarms if it is configured incorrectly. Verifying this setting ensures alarms are allowed to bypass sound restrictions.
Open Settings, and then tap Sound and vibration.
Tap Do Not Disturb, and then make sure alarms are allowed.
5. Change the Alarm Sound
If the selected alarm tone is missing or corrupted, the alarm may fail to play any sound. Switching to a default tone often fixes this instantly.
Open the Clock app, and then tap Alarm.
Edit the alarm, and then select a different built-in alarm sound.
6. Restart Your Phone
A restart refreshes background services and clears temporary system glitches. This step often resolves alarm issues caused by system hiccups.
Swipe down from the top to open Quick Settings, and then tap the Power icon.
Tap Restart, and then wait for the phone to boot up fully.
Alarms on the OnePlus 15 are usually reliable once the right permissions and settings are in place. After checking volume, battery rules, and sound settings, your alarms should ring exactly when you need them.
FAQs
Why does my OnePlus 15 alarm vibrate but not ring?
The alarm volume may be turned down or the selected alarm sound may be missing. Increasing the alarm volume and choosing a default tone usually fixes this.
Can battery saver mode stop alarms on OnePlus phones?
Yes. Strong battery restrictions can limit background activity, which may affect alarms. Setting the Clock app to unrestricted prevents this issue.
Will restarting my phone delete my alarms?
No. Restarting only refreshes the system. Your alarms and schedules will remain intact.
