| SMS: A
wireless text success story |
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| l | Unintended
consequence of European GSM |
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| – | Every European
cell phone could send and receive |
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| – | Metcalfe’s Law |
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| l | Simple messages |
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| – | Text only, 160
character limit |
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| – | Per-message
charge model |
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| – | No connection
with email or other text messaging |
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| l | Customers
adopted SMS in spite of limitations |
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| l | April 1999: 1
billion SMS messages/month |
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| – | 1Q01: 16 billion
messages/month |
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