What causes "Slack Notifications Not Working on iPhone or Android"?

Android battery optimization or Battery Saver restricting Slack in the background Google Play Services notifications turned off (Android) Slack set to notify on mobile only after a delay while you are active on desktop Do Not Disturb or Focus on the phone Corrupted app cache

How do I fix "Slack Notifications Not Working on iPhone or Android"?

1. Run Slack's notification test: Open Slack and tap your profile picture Tap Notifications > Troubleshoot Notifications Run the test; if the checks pass but no test notification arrives, reinstall Slack and run it again Send the report to Slack Support from the same screen if it still fails 2. Send mobile notifications immediately: In Slack, tap your profile picture > Notifications Set mobile notifications to send as soon as you are inactive on desktop 3. Disable battery optimization (Android): Open Settings > Apps > Slack > Battery Choose Unrestricted (or Don't optimize) Turn off Battery Saver while testing 4. Enable Google Play Services notifications (Android): Open Settings > Apps > Google Play Services Make sure notifications are allowed; Slack relies on it for push delivery 5. Restart, reset cache, reinstall: Force quit Slack and restart your phone Android: profile picture > Preferences > Advanced > Reset Cache If nothing helps, uninstall and reinstall Slack

Try or Bye

Browse all analyzed products with real user feedback patterns.

Slack Notifications Not Working on iPhone or Android

Workaround available iOS, Android Updated October 21, 2026

Quick answer

Mobile Slack notifications are most often blocked by battery optimization, missing Google Play Services notifications (Android) or a stale app state. Run Slack's built-in Troubleshoot Notifications test, then disable battery optimization and reset the cache.

Most likely fix: Run Slack's notification test.

Symptoms

Push notifications arrive late or never, only when you open the app, or only on Wi-Fi.

Why it happens

Android battery optimization or Battery Saver restricting Slack in the background
Google Play Services notifications turned off (Android)
Slack set to notify on mobile only after a delay while you are active on desktop
Do Not Disturb or Focus on the phone
Corrupted app cache

How to fix it

Try these in order — the most common fix is first.

1. Run Slack's notification test
1. Open Slack and tap your profile picture
2. Tap Notifications > Troubleshoot Notifications
3. Run the test; if the checks pass but no test notification arrives, reinstall Slack and run it again
4. Send the report to Slack Support from the same screen if it still fails
2. Send mobile notifications immediately
1. In Slack, tap your profile picture > Notifications
2. Set mobile notifications to send as soon as you are inactive on desktop
3. Disable battery optimization (Android)
1. Open Settings > Apps > Slack > Battery
2. Choose Unrestricted (or Don't optimize)
3. Turn off Battery Saver while testing
4. Enable Google Play Services notifications (Android)
1. Open Settings > Apps > Google Play Services
2. Make sure notifications are allowed; Slack relies on it for push delivery
5. Restart, reset cache, reinstall
1. Force quit Slack and restart your phone
2. Android: profile picture > Preferences > Advanced > Reset Cache
3. If nothing helps, uninstall and reinstall Slack

This guide also covers

slack notifications not working iphone
slack notifications not working android
slack notifications delayed
slack push notifications not working

Still not working?

If Slack keeps failing, you're not alone. See every Slack problem users report or the alternatives people switch to.

Other Slack errors