Apple Push Notification Service

Question

how to know my iphone device is registered or not for applepushnotification service?

Answer 1

Are you asking from a development perspective? Push notification can be enabled on a per-app basis in the iPhone Developer Program Portal under the App ID section. You need a valid and universally unique App ID.

If you're speaking from an accessibility standpoint for getting push notifications to your phone from a third party app, that is built into your phone and can be enabled/disabled from Settings on your iPhone.