Several large scale mobile telephone industry companies are planning to jointly deliver a ubiquitous, interoperable presence enabled messaging service, built according to interoperability recommendations developed in the GSM Association. Because these organisations, as a group, have about 1.5 billion active Short Text Messaging (SMS) users, people wonder if such an initiative might also help the different industry factions to begin to work together soon. This would make Mobile Instant Messaging similar for all users.