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Use this page to confirm supported SDK/UI Kit versions, platform/browser coverage, hard limits, and known notification caveats before you ship.

What you need (SDKs/UI Kits)

To implement Notifications, use the minimum versions below (UI Kits already bundle the matching Chat and Call SDKs):
  • UI Kits: v4+ (Flutter Calls UI Kit v4.3.0+)
  • Calls SDK: all versions (Flutter Calls SDK v4.0.9+)
  • Chat SDK: iOS v4.0.51+, Android v4.0.9+, Flutter v4.0.15+, React Native v4.0.10+, JavaScript v4.0.8+, Ionic (Cordova) v4.0.8+ (Deprecated - use JavaScript SDK)
  • Chat Widgets are not compatible with push notifications.
It is possible to use Notification features without using UI Kits with an entirely SDK dependent solution with the above-mentioned SDK versions.

Supported web browsers

  • Chrome 50+
  • Firefox 44+
  • Edge 17+
  • Opera 42+

Supported platforms

  • iOS v11+
  • Android v21+
  • Flutter v2.17+
  • React Native v0.73 and earlier
  • React v18 and earlier
  • Angular v17 and earlier
  • Vue v3 and earlier
  • Capacitor v6 and earlier

Limits (delivery and content)

Platform-specific limitations

  • iOS: Calling notifications work only with APNs (VoIP). FCM calling notifications are not supported (native iOS, React Native iOS, Flutter iOS).
  • Android: FCM push works on devices with Google Mobile Services; it does not work on Huawei devices.
  • Flutter (Android) with FCM: In the foreground, edited/deleted message notifications may still show the original text.
  • Browser notifications are not supported on mobile devices.
  • Calling Notifications are not supported in web browsers.