Cellular operators are built into mobile instant messaging.

Sixty mobile operators around the world have agreed to develop a new chat features, which will be built into the software cell phones, transmits AFP.
Users will be able to see which of the contacts in your address book is available and send them text messages, images or video. In fact, it is a built-in instant messaging program.
In addition, each user will be able to write than it currently is, or where. This status is similar to what is the social network Facebook, will be shown to other users.
It was expected that the first commercial models of phones that support such a chat, to appear in the second half of 2009. Not yet known how much it will cost to use IM, and whether he was replaced by SMS.
The initiator of the new development was the Association of GSM, which includes the GSM-850 operators in 218 countries around the world.