On the Android platform, a blue dot appearing next to a text message typically signifies that it is a new, unread message. This visual cue provides a simple way for users to quickly identify messages that require their attention within a messaging application. Absence of the blue dot indicates the message has been viewed.
The inclusion of such an indicator enhances the user experience by streamlining message management. It allows individuals to prioritize communication and avoid overlooking newly received information. This feature has become a standard element in modern mobile operating systems, evolving from earlier text-based notification systems to a more intuitive graphical representation of message status.