How do I make TomTom my default navigation?

[infatti]

Coming from Droid, I love my new iPhone 4s but the navigation is not nearly as smooth as my previous droid using google maps that just Worked.

I want to ask Sirius to navigate somewhere and have TomTom automatically come up with the correct address and start navigating. Instead I can only get the iPhone default navigation to come up and I need turn by turn from my TomTom.

How do I make TomTom my default navigation for my iPhone 4s?

 

[hexonxonx]

There is no way to do this.

 

[soco]

Yep, one of the downfalls of iOS. Lack of turn-by-turn navigation within the OS itself. Hopefully iOS 6.