Back button behavior

[VasilisKos]

When opening a received SMS from the notification, if you tap the back button, it exits the app. It should return to the messages list instead.

[Goodwy]

If you are using another application, such as a game, and have entered the chat via a notification, you will most likely want to return to the game.

[VasilisKos]

If you are using another application, such as a game, and have entered the chat via a notification, you will most likely want to return to the game.

If you're using another so important app, you'll most likely just read the message on the notification, without opening it. Most of the times, when you open the notification, you do it when not in another app.