When a notification shows as "Delivered" on our system, it means we have successfully sent the notification to Google or Apple's servers which distribute the notifications to subscribers.
The following are reasons why notifications may show as "Delivered" on the OneSignal dashboard or API, but are not visible on your device or website.
Common Issues for ALL Platforms
Network issues
The network / WiFi you're connected to may have closed your connection to Apple or Google servers'. Try disabling and re-enabling your internet connection. See our Notifications delayed troubleshooting guide for more details details.
Not Subscribed
Please see our Player ID guide for info on finding your device in the OneSignal dashboard to make sure it is still subscribed.
Not Targeted
Check the segment targeted to make sure it is setup correctly. This is under Segments. Sometimes an incorrect filter is added to the segment removing certain devices.
Check the Player ID record in the All Users section of the dashboard. Under the "Segments" column, you will see if that user is in the segment targeted for push.
NEXT - Jump to platform:
If these 2 cases are not the issue, please see below platform specific issue guides:
Mobile Specific
If your device is subscribed and has a working network connection, try adding your device as a Test User. Make sure you are using the latest version of the OneSignal SDK and have the app running in the background when you test the push.
Then follow these points if you still do not get the notification:
Xcode 11 change
If you are using Xcode 11, make sure you are using the latest version of the OneSignal SDK. Xcode 11 made a breaking change that affects push token registration. More details here: https://onesignal.com/blog/ios-13-introduces-4-breaking-changes-to-notifications/
The app has push permissions Disabled
Each OneSignal SDK has a setSubscription method. If this is set to false then the device will show as subscribed in the app settings, but is actually unsubscribed from OneSignal in All Users. Make sure you did not add this property to your app.
Also, make sure push permissions are enabled for the device:
- iOS - Check your app under Settings > Notifications.
- Android - Check the notification setting under Settings > Apps
The app is currently In Focus
Please check the value you added in you init for inFocusDisplaying or inFocusDisplayType depending on your Mobile SDK Version.
If you set this to None or 0 then no notification will show while the app is open. There are other options you can set this to if you want to show notifications while the app is open.
Low Power, Energy Saving, Do Not Disturb Mode
Some devices have a specific battery optimization that will stop notifications from showing.
- iOS - "Low Power Mode" is enabled. If in your Settings > Battery > Low Power Mode is enabled, this will reduce the rate at which notifications can be received or turn them off completely.
- iOS - "Do Not Disturb" is enabled. If in your Settings > Do Not Disturb is enabled, this can prevent notifications from being received.
- Android - Settings > Battery > Battery Optimization or Adaptive Battery > Find your app and press Don't optimize
The app is Force Stopped
When an app is in a "Force Stopped" state most events including GCM/FCM messages for push notifications will not be received. An app can be placed in this state in the following ways.
- From Settings > Apps, "Force Stop" is pressed.
- Long pressing the back button on some devices.
- Using a 3rd party task killer like Greenify.
- Swiping away your app while remote debugging it.
- Not the same as viewing the logcat but launching your app as a remote debug process.
- Swiping away your app from the recent apps on list on a Xiaomi device.
- Automatically on some devices due to custom Android tweaks done by manufactures. Steps below on disabling this.
Asus
Check your app in the Auto-start Manager.
Huawei
Step 1: Settings --> Advanced Settings or Power Saving --> Battery Manager or Protected Apps --> select the app to protect it.
Step 2: Settings --> Apps or Notification Manager --> Advanced or Notify for your app --> Ignore Battery Optimizations, select the app and ignore it.
Step 3: Settings --> Notification Panel & Status Bar --> Notification Center, select the app, then activate "Allow Notifications" and also "Priority Display".
Pre-EMUI 5.0 / Android 7 - Go to Settings > "Protected apps", check your app. Full Instructions
LeEco/LeTV
Step 1: Settings --> Permissions --> Manage Auto Launch --> select the app to protect it.
Step 2: Settings --> Battery --> Power Saving Management --> App Protection, select the app and ignore it.
Lenovo
Settings --> Power Manager --> Background App Management, select the app and ignore it.
OnePlus
Settings --> Apps or Advanced or Battery --> gear icon or Recent Apps Management or Apps not optimized or Battery Optimizations --> App Autolaunch or Ensure Normal clear enabled or Don't Optimize or Advanced and toggle your app
Oppo
Settings --> "Security settings" --> "Data saving" and enable your app.
Samsung
Disable battery usage optimizations
Settings --> Device Management --> Battery --> Unmonitored apps --> Add your app
Make sure notifications are turned on for your app
Settings --> Apps --> Your app --> App Settigns --> Notifications --> Set as Priority
Sony
Tap on the battery icon. Go to Power Management --> STAMINA mode --> Apps active in standby --> Add your app.
Xiaomi/
Redmi
Security (App) --> Permissions --> Autostart - Enable your app
Settings --> Developer Options. Disable "memory optimization". To enabled Developer Options go to Settings --> About. Tap on MIUI 8 times. Full Instructions
More information on problematic devices can be found in our blog post: Notifications are highly reliable, except when device manufacturers interfere
Checking your app state
1. Run the following to check the current state of your app.
Replace "com.company.appname" with your package name.
adb shell dumpsys package com.company.appname | grep stopped
If you see stopped=false if everything is fine, otherwise you will see stopped=true then your app was force killed in some way.
2. Another way is to send a few notifications and check for the following GCM logcat entry.
W/GCM-DMM: broadcast intent callback: result=CANCELLED forIntent {
act=com.google.android.c2dm.intent.RECEIVE pkg=com.onesignal.example (has extras)
}
If you seen this cancelled intent above then your app could not be started to process the notification.
Some device manufactures will white list apps from going into the force closed state. Example such as Gmail and Whatsapp.
Action buttons or iOS 10+ media are set and requirements are not meet
The app must be not force killed and the correct settings must be enabled when these options are set.
See our Notifications with action buttons or iOS 10+ media not displaying section for a full check list.
Additional Debugging
FCM provides a REST API to query the last time a device has been connected to FCM. See the following Google documentation on how to get this.
https://developers.google.com/instance-id/reference/server#get_information_about_app_instances
Web Specific
Notifications are blocked in Settings
This is the most common reason. Check your browser settings on desktop or app settings on mobile:
Windows users see Settings -> Notifications & Actions -> Turn on Get notifications from apps and other senders See this screenshot Also, view this article for more: https://www.digitaltrends.com/computing/how-to-configure-notifications-action-center-windows-10/2/
MacOS users, make sure you do not have "DO NOT DISTURB" mode on in your System Preferences. https://www.imore.com/how-use-do-not-disturb-mac
Android mobile, please check in your Settings -> Application Manager -> Chrome. Make sure Show notifications is checked like this: https://i.imgur.com/LY810Mj.png on Firefox it will be the same: https://i.imgur.com/a3lB88b.png
Service Worker or PWA
If you have another service worker or PWA on the site, this can cause issues with the OneSignal Service Worker required for push notifications.
Please see our Service Worker guide on how to use OneSignal with a PWA or multiple service workers
Browser is Closed
Some browsers will not receive push if it is not running. More details in our Browser Behavior Guide.
Clearing Browser Data
Clearing your browser cookies, data, and/or history will cause the browser to not get notifications any longer and will need to revisit the site to re-subscribe.
Browser App Data Full
If your mobile browser app has reached its data limit or its data is full, you will need to clear the data on the app.
Unsupported Browser
Users must subscribe to notifications on their desktop or mobile device to receive notifications and it must be a browser that supports push notifications. Please see Supported Web Platforms.
Full Screen
Full screen mode in some older browser versions prevent web push notifications from appearing. Make sure no windows are in full screen mode. Please see Web Push Troubleshooting Docs for more.
Debugging Web Push Notifications
Please follow these simple steps to debug your site:
1. Use Chrome (or your favorite browser for debugging if a developer) and go to your site url with the OneSignal code. Open the JavaScript console. Generally, this is done by:
- right click the site and press "Inspect", or
- in the Chrome Menu select View > Developer > JavaScript Console
2. In the console use this code to send yourself a push notification if you are still subscribed:OneSignal.sendSelfNotification();
3. If no notification shows up, please clear your browser permission and cookies to access your site as a first time user and resubscribe:
1. Click the lock next to your URL
2. Next to Notification, select "Ask (default)"
3. Click Cookies
4. Select your site
5. Click Remove
6. Click Done
4. Then in the Console use this code to get your new OneSignal Player ID:OneSignal.getUserId(function(id){console.log(id)});
5. You can copy-paste that player id into your onesignal.com All Users page and add yourself as a Test User this will also tell you if you are subscribed correctly.
6. Repeat step 2 to send yourself a notification with OneSignal.sendSelfNotification();
If you still do not get the notification, contact support and provide your new player id and site URL with the OneSignal code.