To get HBO Max, simply go to play.hbomax.com, or install the HBO Max app on your iPhone via the App Store, Android using Google Play, or on a compatible smart TV (use your TV or media player's channel store to find and install HBO Max). Then sign in using your provider's credentials. hbomax/tvsignin – Visit the authority web-based interface and enter 8 digit activation code to activate hbogo or hbomax on your devcie. USer are free to activate hbomax on the following gadgets like smart television, Apple TV, roku, playstation,