Skip to main content
Before you set up iOS push notifications in OneSignal, prepare the required identifiers in your Apple Developer account. You need access to Certificates, Identifiers & Profiles and the exact Bundle ID configured for your Rey app.

​
Set up your Apple Developer account

1

Create the notification service extension

In Apple Developer → Identifiers, create a new App ID with the Bundle ID YOUR_BUNDLE_ID.OneSignalNotificationServiceExtension. For example, io.reyapp.preview.OneSignalNotificationServiceExtension.
2

Create an App Group

In Apple Developer, create a new App Group with the value group.YOUR_BUNDLE_ID.onesignal. For example, group.io.reyapp.preview.onesignal.
3

Add the App Group to your Rey app

Open the App ID for your Rey app (YOUR_BUNDLE_ID). Under Capabilities, enable App Groups, choose Edit, and select the App Group you just created. Also confirm that Push Notifications is enabled.
4

Add the App Group to the notification service extension

Open the App ID for YOUR_BUNDLE_ID.OneSignalNotificationServiceExtension. Under Capabilities, enable App Groups, choose Edit, and select the same App Group.
The Bundle IDs and App Group must match exactly. A different spelling, a missing group. prefix, or selecting the App Group on only one App ID can prevent iOS notifications from working.