Right from the beginning communication has always been directed towards a utopia-like easy to use, ubiquitous and intuitive mode of interaction. Graham Bell was nearly committed to psychiatric care for suggesting that he had managed to send and receive an audio message across the ocean through thin-air, using radio waves.
While that may have seemed impossible to his contemporaries, today's communications have evolved from the archaic (imagine what Bell would have to say about that) operator managed inconveniences, into the Private Automated Branch eXchange (PABX), PSTN and now VoIP assisted communications.
For a while audio (telephonic) communications were limited to a desk device that had to be physically linked to the phone company's local exchange office. This was the norm, since Bell's time till a few years ago when telephonic communications evolved and morphed to the use of mobile devices.
The mobile phone has truly revolutionised the world allow people to communicate and interact in all sorts of 'novel', economic, social and political spheres of life. While some iterations like the Iridium (Motorola-backed) 50 Billion USD gamble failed to take off, the prolific advance of technology has allowed the mobile phone to take the number one spot as the world's most important device.
If you think about it the mobile phone is (or will soon be) classified as a basic need / human right. If you doubt that, think about how different your world would be if you did not have your mobile phone and all its important tools that allow you to keep tabs on the rest of the world, while you accomplish other tasks.
Ease-of-use, great interfaces, advances in technology, content integration and competition have allowed mobile devices to deservedly take their place as the most important communication device in the world today. Yes competition has allowed for the integration and research into better and more encompassing uses for today's mobile devices, from basic communication, games, health care support all the way to defence and emergency / early warning systems (Israel will launch it SMS-CB based system in 2011).
As we continue to use / require mobile device for an increasing number of daily critical tasks, a thought should be spared for the requirement / need for reliable forms of backup for this critical data. Already services like SimuSync exist, that allow for seamless backup and management of mobile content.