Sony's PlayStation App will be free to download on iOS and Android when the PS4 launches next month.
Through the app users can view their PSN profile, keep in touch with their friends, view their activity, watch a friend's recorded gameplay or livestream, and compare trophies.
Users will also be able to send written and voice messages from their smartphones to PS4 owners.
The PlayStation app will also allow users to purchase a game from the PlayStation Store on their phone and immediately start the download on the console.
The app can also act as a second screen for the PS4. One example of this use is drawing a picture on a smartphone and then uploading it into a PS4 game, such as The Playroom.
“There are many big publishers creating their own apps for their games, like Watch_Dogs or Battlefield, and that’s great,” said Yoshida.
“But smaller developers can use PlayStation App to connect to PS4 and load an application, like drawing software for example, so that you don’t have to download and install a specific app on your smartphone. It’s open to all PS4 developers to use.”