Missing important appointments, medication doses, or daily tasks because your phone’s reminders aren’t triggering can be incredibly disruptive, but learning how to fix reminders not working on phone is simpler than you might think—with a mix of quick checks, targeted OS tweaks, and advanced fixes tailored to your device’s settings. Most reminder issues stem from simple oversights like disabled permissions or conflicting power settings, so you can resolve them without professional help in minutes.
Device-Level Basic Fixes for Non-Working Reminders
Before diving into OS-specific steps, rule out common, device-wide issues that cause reminders to fail. These checks work for both iOS and Android devices, making them a great starting point for any user.
Check Reminder Permissions
Many users overlook that reminder apps—whether stock tools like Apple Reminders or Google Tasks, or third-party apps like Todoist—require active notification permissions to trigger alerts. For iOS, navigate to Settings > [Your Reminder App Name] > Notifications, and ensure "Allow Notifications" is toggled on, with both "Sounds" and "Badges" enabled. For Android, go to Settings > Apps > [App Name] > Notifications, then confirm the "Show notifications" switch is active. For example, if you disabled Google Calendar’s notification permissions last month to reduce clutter, you won’t get alerts for upcoming events, even if they’re properly scheduled.
Verify Reminder Timing and Quick Device Settings
Reminders often fail due to simple setup errors: a reminder marked as completed, set to a past time, or with an incorrect repeat schedule. Double-check that your reminder has a future date and time, the "Repeat" option (if used) aligns with your needs, and the "Alert" toggle is enabled (not just a saved note without a trigger). Additionally, temporary device modes can block alerts, so run these quick checks:
- Toggle off Do Not Disturb mode (accessible from your control center on both iOS and Android), as it blocks all non-priority notifications including reminders
- Ensure your ringer volume is turned up (not on silent or vibrate only) so auditory alerts are audible; many users accidentally set their phones to vibrate during work hours, missing critical reminders
- Disable Battery Saver mode temporarily, as it restricts background app activity to save power, which can prevent reminder apps from sending alerts that rely on background processes
OS-Specific Fixes for iOS and Android Reminder Problems
If basic checks don’t work, issues may be tied to your device’s operating system. These OS-specific tweaks address common bugs that affect reminder functionality.
iOS-Specific Solutions
For iPhone and iPad users, a quick restart of the Reminders app or your device can resolve temporary software glitches that block alerts. To restart the app, swipe up from the bottom of your screen (or press the home button twice) to open the app switcher, then swipe up on the Reminders app to close it. For deeper fixes, check for iOS updates: outdated versions often include bug fixes for app-related issues. Go to Settings > General > Software Update to install the latest iOS version. Also, confirm Reminders are properly synced to your iCloud account: go to Settings > [Your Name] > iCloud, toggle Reminders off, wait 30 seconds, then toggle it back on to refresh sync, which resolves missing reminder entries that don’t trigger alerts.
Android-Specific Solutions
Android users can clear their reminder app’s cache to fix corrupted temporary files that cause alerts to fail. To do this, go to Settings > Apps > [Your Reminder App (e.g., Google Tasks, Samsung Reminders)] > Storage > Clear Cache—avoid clearing data unless necessary, as it may delete saved reminders. Another key tweak is adjusting battery settings: many Android skins (like Samsung One UI or Xiaomi MIUI) automatically hibernate background apps to save power, which stops reminders from triggering. Go to Settings > Apps > [Your App] > Battery > Unrestricted to allow the app to run in the background. For Samsung Reminders specifically, add the app to your "Never sleeping apps" list in Settings > Device Care > Battery > App Power Management to avoid hibernation.
Advanced Fixes for Persistent Reminder Issues
If basic and OS-specific steps don’t resolve the problem, these targeted fixes address more complex conflicts. First, recreate the problematic reminder: sometimes a corrupted reminder entry causes it to fail silently, so deleting and re-adding the event with identical settings often fixes the issue. For third-party apps, ensure they’re updated to the latest version—outdated apps may have compatibility issues with your phone’s OS that break reminder triggers. If you use a sync service (like iCloud, Google Calendar, or Todoist), check your internet connection: a weak or unstable Wi-Fi/cellular link can prevent reminders from syncing across devices, leading to missed alerts. Additionally, reset app preferences if you’re experiencing widespread issues with multiple apps: this resets all app permissions, notifications, and settings to default, which resolves hidden conflicts between your reminder app and system settings. To reset, go to Settings > System > Reset > Reset App Preferences on Android, or reset all settings on iOS via Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings.
Fixing reminders not working on phone doesn’t require advanced technical skills—start with quick checks like permissions, Do Not Disturb mode, and volume settings, then move to OS-specific tweaks for iOS or Android. If issues persist, use advanced steps like clearing app cache, syncing your reminder service, or recreating problematic entries to get your alerts working reliably. By following these steps, you can eliminate missed tasks and ensure your phone’s reminders support your daily routine without interruption.
Everything above about “how to fix reminders not working on phone” is originally written by our editorial team. Reproduction is strictly prohibited.