How to Fix Android Notifications Not Showing Up

You miss an important message because the notification never appeared. You find texts and emails hours after they arrived. Your phone is silent even when apps are supposedly sending alerts. Missing notifications are a real problem and they’re almost always caused by one of a handful of settings — here’s how to track down the specific culprit.

Check the App’s Notification Permission

Go to Settings > Notifications > App Notifications. Find the affected app and make sure notifications are enabled. After Android 13, apps require explicit permission to send notifications — permission that may not have been granted during setup. If it’s toggled off, turn it on and check whether individual notification categories within the app are also enabled.

Check Do Not Disturb Settings

Do Not Disturb can silence notifications without you realizing it’s active. Go to Settings > Notifications > Do Not Disturb and check whether it’s on or set to a schedule. Also look at DND Exceptions — certain apps or contacts may be blocked. Bedtime Mode and Focus Mode can also suppress notifications without being obviously labeled as DND.

Samsung-Specific: Remove Apps From Sleeping App List

This is the most common cause of missing notifications on Samsung phones. One UI puts inactive apps to sleep, which prevents them from delivering notifications. Go to Settings > Battery > Background Usage Limits. Check Sleeping Apps and Deep Sleeping Apps. Remove any app that needs to deliver notifications. This is the fix for the vast majority of Samsung notification problems.

Disable Adaptive Battery for Problem Apps

Go to Settings > Battery > Adaptive Battery. While keeping this enabled generally, go to individual apps that are missing notifications and set them to Unrestricted under Settings > Apps > [App] > Battery. This overrides Adaptive Battery’s decisions for specific apps while still applying optimization to everything else.

Check Background Data Restrictions

If an app can’t connect to the internet in the background, it can’t receive push notifications. Go to Settings > Apps > [App] > Data Usage and ensure Allow Background Data Usage is enabled. Also check that Data Saver isn’t blocking the app — go to Settings > Network > Data Saver and add the app to the Unrestricted list.

Re-enable Sync for Messaging Apps

For email and sync-dependent apps, go to Settings > Accounts and verify that sync is enabled for the relevant account. Tap the account and toggle individual sync categories. Gmail specifically: ensure Background Sync is enabled in Gmail’s own settings (Gmail > Settings > [Account] > Sync Gmail).

Reinstall the App if All Else Fails

Sometimes notification permission corruption is deep enough that reinstalling is the cleanest fix. Uninstall the app, restart the phone, reinstall, and grant notification permission explicitly during first launch. For messaging apps like WhatsApp, ensure you have a recent backup before uninstalling

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