You must first record and generate a test as mentioned in Recording Android tests.
To be able to test your application on a mobile device, the mobile device must be running the mobile test client and be connected to the test workbench. You can connect the mobile test client to the test workbench by following the instructions in Configuring the mobile test client for Android, or you can do this at installation time by following the instructions in Installing and configuring the Android client with the USB Controller.
With the mobile test client for Android, you can also play back GPS locations and hardware actions such as volume up and down, mute, the use of headphones, and all media actions (play, pause, and so on), making calls, and ending calls. Camera and microphone functions are not supported.