This is what t-mobile is doing now that is not infringing on our patent: http://www.engadget.com/2010/09/26/t-mobile-to-bundle-wi-fi-calling-app-with-future-android-devices/ This is what t-mobile was caught doing that does infringe on our patent: http://mobile.engadget.com/2007/06/27/hands-on-with-t-mobile-hotspot-home/ http://www.mobileinternetsolutions.com/wordpress/2010/12/cisco-t-mobile-team-up-for-wi-fi-calling-for-business-system/