Use PlayStation Messages to see who's online and to send messages to your friends from your mobile device. Always stay connected with your friends even while you're away from your PS4. The PlayStation Messages app for your mobile device includes the following features: • See who's online and what game they're playing. • Send text and voice messages as well as photos and stickers to your friends and groups. • Quickly access your groups by adding them to your favorites. An account is required to use this app. The Share extension is used for sharing content such as URLs and images to PlayStation Messages.