The Clock app is an essential tool on your Galaxy S25 Ultra. It handles alarms, timers, and world clocks, all of which help you stay organized. But when it stops working or crashes unexpectedly, it can disrupt your routine and cause you to miss important alerts.
If the Clock app isn’t opening, freezing, or failing to trigger alarms, the problem could be related to software glitches, battery restrictions, or corrupted data. Here’s how to fix it.
Why Your Galaxy S25 Ultra Clock App Might Not Be Working
- App cache or data is corrupted.
- Battery optimization is restricting background activity.
- Software or One UI version is outdated.
- Do Not Disturb or Bedtime Mode is interfering with alarms.
- App permissions or notifications are disabled.
Clear Cache and Data of the Clock App.
Corrupted cache files often cause apps to crash or malfunction. Clearing them resets the app without deleting your alarms.
- Open Settings, and then tap Apps.
- Scroll down and tap Clock, then tap Storage and cache.
Tap Clear cache, and if the issue continues, tap Clear data. This will restore the app to its default state.
Check App Notifications and Permissions.
If you are not receiving alarms or timer alerts, the app’s notification settings might be turned off.
- Open Settings, and then tap Notifications.
- Tap App notifications, and then scroll down and tap Clock.
Make sure notifications are allowed, including sounds and vibration. This ensures alarms trigger properly even when the screen is off.
Disable Battery Optimization for the Clock App.
Battery optimization may prevent the Clock app from running in the background, which can stop alarms from going off.
- Open Settings, and then tap Battery.
- Tap Background usage limits, and then tap Never sleeping apps.
Add Clock to the list so it can always run in the background. This ensures your alarms will ring even in power-saving conditions.
Check Do Not Disturb and Bedtime Mode.
Do Not Disturb or Bedtime Mode may silence alarms or prevent alerts from sounding. Turning them off can restore normal function.
- Open Settings, and then tap Notifications.
- Tap Do Not Disturb or Bedtime mode, and then toggle them off.
After turning them off, test the Clock app by setting a short timer or alarm.
Update Software and Clock App.
Outdated software may contain bugs that cause system apps to malfunction. Updating both the app and system can resolve these issues.
- Open Settings, and then tap Software update.
- Tap Download and install, and follow the prompts.
Next, open the Galaxy Store, tap Menu, then My apps. Check if the Clock app has an available update.
Reset All Settings.
If none of the steps work, resetting all settings may fix hidden configuration issues that affect the Clock app.
- Open Settings, and then tap General management.
- Tap Reset, and then tap Reset all settings.
This will restore default system preferences without deleting personal data or installed apps.
Once you complete these steps, your Clock app should work smoothly again. You can rely on your Galaxy S25 Ultra for alarms, timers, and world clocks without missing a beat.
FAQs
Why don’t my alarms go off even when the Clock app is open?
Battery optimization or Do Not Disturb may be preventing the alarm from ringing. Add the Clock app to Never sleeping apps and disable DND.
Can I reinstall the Clock app on my Galaxy S25 Ultra?
You cannot uninstall it completely since it’s a system app, but you can reset it by clearing cache and data or updating it through the Galaxy Store.
Why does the Clock app freeze when setting an alarm?
This usually happens due to corrupted cache or a pending system update. Clearing cache or updating One UI typically resolves the problem.
