Why do you need a smartphone joystick?
You may want to consider using a smartphone joystick for many reasons. Here are some advantages of using a smartphone joystick:
Functionality: the joysticks will give you more buttons and therefore more options during the gameplay. Instead of having a single way to interact with your game (by tapping the screen), you have multiple buttons for playing.
Control: A smartphone joystick will allow you to easily control the game. You are sure to be precise while taking these tight turns while playing a racing game or dodging this ball in an FPS game.
Familiar: these joysticks are very similar to those offered on consoles such as PlayStation, Xbox and Nintendo. They are intuitive and easy to use.
Reactive and fast: certain games such as fighting, running or sport require a very fast reaction. You are able to react faster with a joystick and be less likely to make mistakes. It's hard not to press the wrong button every once in a while when using a touch screen.
Performance: with a smartphone joystick, you will have better performance. You will spend less time gaining achievements and overcoming levels. You can master smartphone games much faster with a joystick.