If you want to use MQTT for push in Android apps, you'll probably want to head over to Anton L's blog post [How to Implement Push Notifications for Android]. He has a sample Android app that uses the IBM Java library to implement push notifications using MQTT, as well as a web page solution to demo pushing notifications to your phone. [How to Implement Push Notifications for Android]: http://tokudu.com/2010/how-to-implement-push-notifications-for-android/