The Use of SMS for Texting and US Cell Phones

by Chris Abraham on 03/04/2007

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Posted Jan 24, 2003 – 11:52 AM – I picked up the book Smart Mobs by Howard Rheingold at Barnes and Borders the other day and am through some of it… But partway through I did what I always do — I see if I can SMS all of my friends to their cell phones.


I have SMS down (even though I am too old) because I dig this kind of stuff. I use T-Mobile and have a “world phone” using GSM. Periodically I try to get this kind of stuff to work — send out GSM SMS messages — but in the past, there has always been a US-based interoperability problem — the different service providers (T-Mobile (nee VoiceStream), Verizon, Sprint PCS, etc) could not text to eachother unless they used an email gateway, which is not texting/SMS but emailing.

SMS doesn’t work the same way email does. The way email works is similar but based on a different standard. SMS is based on your mobile phone number, and instead of using a top-level domain (.com) and then a domain name (zdev), an @-sign, with the user name (chris), an SMS address is based on a country code (+1 for the US, +44 for the UK, etc), your city code (202 for DC, 171 for London, etc), and your mobile number as supposedly — or so the GSM-standard was supposed to go — a Global phone and texting number. My phone can be sent a Short Message here in Washington, in London, Berlin, etc, all with the same number, +12023525051. As in all things telephony, we in the US have been stuborn and have been trying to implement our own Standards. T-Mobile (nee VoiceStream) and AT&T are two examples of US-based companies that have embraced GSM (albeit at a different Frequency (1800MHz instead of 900MHz) — nothing’s perfect) and I am sure there will be others.

While I was reading Smart Mobs while at the reception area awaiting my Mum’s check up, I sent out a barrage of SMS text. I was received by 2/3 of the receipients, from Verizon to a friend in London, to another T-Mobile. I don’t know what the other services are, but the funny thing is that for 2/3rds of the people who could receive my SMS I was their first, and for that 2/3rds, 2/3rds called me to tell me that they had received the message, now knowing how to use the texting part of the mobile. Quelle Bizarre! You can SMS me at +12023525051 and I can reply!

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