Smart message
Encyclopedia
Smart message is a protocol
Communications protocol
A communications protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications...

 designed by Intel and Nokia, and by which various software upgrades— including ringtones — can be made "over the air", through the wireless connection.

Smart Messaging is basically a special type of short message
Short message service
Short Message Service is a text messaging service component of phone, web, or mobile communication systems, using standardized communications protocols that allow the exchange of short text messages between fixed line or mobile phone devices...

, with its own prefixes and codes, that makes it possible for the phone to recognize the message as, instead of a text message to the attention of the user, a "functional" message that should be treated as: a ringtone, a screen logo, in some cases even a business card or group graphics that can be used to identify who is calling.
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