there is apps for tips and tricks but not the real game
No
It depends on the app. The answer, therefor, is yes.
There is no cellphone app that ports over numbers. This must be done by cell phone providers.
yes they are
download halo waypoint app
download halo waypoint app
no
Nope you need a carrier
You can easily chat with your cellphone on Gmail. It can be done by putting the hangouts app. The application is compatible with phone alse.
There is an app for MagicJack in the Apple app store. However MagicJack is not available to the android google market
go to 'settings' at the bottom of app and click 'change'
Halo 3: ODST is the newest of the two, but not the newest Halo game.