iPhone OS 3.0 does not have background support, Apple delivers it in another way: Push notification. If we don’t talk about the technology, actually you will feel that the app is just like running in the background. Since iPhone 3.0 is there, and BeejiveIM and AIM updates are available today, you can now experience how it works.

BeejiveIM and AIM could be the first 2 instant messaging program that supports push notifications. After you pushed the home button, you’re still online. When friends send you a message, it will be displayed immediately. The first time I tried push notification is AP Mobile when 3.0 is still in beta. It seems push is more useful for IM apps. I have tested it using BeejiveIM for few hours already, but sometimes it disconnected suddenly. But most of the time it works like the SMS app.

Can’t wait to see the other popular IM freeware Palringo to support push in the future.