# Overview

We distinguish three services that enable sending push notifications via mobile application: Apple Push Notification service (APNs), Huawei Message Service (HMS), and Firebase Cloud Messaging (FCM). 

To be able to use these services and send push notifications via mobile app, integration using our SDK is required.

SDK functionalities are:

* subscribe / unsubscribe for push notifications
* send event delivered / clicked
* send beacon

Documentation can be found here:

* iOS: <https://github.com/ppgco/ios-sdk>
* Android / HMS: <https://github.com/ppgco/android-sdk>
* Flutter: <https://github.com/ppgco/flutter-sdk>

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Mobile providers' view in our application will be available for projects with mobile features enabled.
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