iPhone. Open application during call

Is there any way to do this?

In other words, is it possible during a call to allow the user to open a c开发者_Python百科ertain application? (for example, to provide information based on the person who is calling).

If not, will something like this be available on iOS 4?

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You can open an application during a call (not automatically).
User can press the home button (the one that is under the screen) during a call and open some third party application.

Another issue is to retrieve the contact that the user is talking to now - I believe that this is impossible.

Regarding iOS 4 - I am pretty sure that this will be possible...

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No.

AFAIK, there are two ways to launch an application:

• The user taps the icon
• The user responds to a push notification

You cannot directly control when your app is launched. Furthermore, once your app is running, there is no way to access information about the current call.