There are two main ways to play baccarat on mobile devices- on a web browser or on a dedicated app. With a web browser, a player just goes directly to their preferred browser- Chrome, Firefox, e.t.c- and searches for Baccarat on their favorite site. For app play, a download from the playstore needs to be installed.
How well the game is played on mobile depends on the player's preference and the casino's options. Some casinos offer instant play option while others require a download. Most houses are seeking to have both options available by making apps and configuring websites to be mobile adaptive.