Hi.
You should try to tell your WP to use another host as a default router. In that host you can then sniff all the traffic coming/going from/to the WP.
Also you must setup ip masquerading in the intermediate host so that all dialogues between Nokia-HERE and the WP work properly.
This is not a trivial issue.
I suppose that it is not easy to configure a WP with a manually-set default router ip address.
Regards.