Apple Explains the Basics About iPhone Push Notification Service

While we wait for iPhone apps with push notification feature, Apple has published a [support article](http://support.apple.com/kb/HT3576) explaining the basics about iPhone’s push notification service:

### iPhone OS 3.0: About Apple Push Notification Service
*Last Modified: June 19, 2009*
*Article: HT3576*

Summary
This article explains the basics about Apple Push Notification Service and where to get additional information.

Products Affected
iPhone, iPod touch, iPhone 3G, iPhone 3G S, iPod touch (2nd generation)

* If the Settings > Notifications menu does not appear on your device, you don’t have an application installed that supports notifications.

* You need to open an application at least once to get any notifications from that app.

* When the iPod touch screen is on and has a Wi-Fi connection, push notifications are received at any time. If the iPod touch screen is asleep, it will check every 15 minutes for a notification.

* If you want to disable notifications from an application, turn off all notifications for that application in Settings > Notifications.

* When you restore a backup to a different iPhone or iPod touch, apps will need to be opened again to get notifications.

Additional Information
Apple Push Notification Service requires iPhone OS 3.0 or later and a connection to the Internet, either via a cellular data network or Wi-Fi, and at least one application that supports notifications.

For additional information, see the [iPhone User Guide](http://www.apple.com/support/country/?dest=manuals), the [iPod touch User Guide](http://www.apple.com/support/country/?dest=manuals), or [www.apple.com/iphone/appstore](http://www.apple.com/iphone/appstore).