Hi. I have a few questions regarding GPS apps on Iphone 3GS.

1. When GPS is navigating, when a call comes in, can I pick up the call, and when hang up resume back to the GPS navigation?

2.When the GPS app is on, can i go and make a phone call and back to the app?

3. If an sms comes in when GPS is navigating, can i goto check the sms and come back to continue the navigation?

Cos as i have played around with some games on iphone, it doesn't seem to allow multitasking. It seems if i go do something else, then I'll have to start over again with the app i open...

Thank you in advance for your feedback. Cheers.