Just open the example scene, run the game in your editor. You will have virtual joystick, full screen touchpad, and a jump button. You can navigate your dummy third person character easily using this setup. Touch and drag / swipe to orbit around the character, then move the joystick it will move the player object according to the view angle of camera / the movement direction of the character is relative to the view angle of your camera.
Just watch the demo video and I will explain it: