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?

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...

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.