The following instruction gives you details how to send Twitter messages from your cell phone? Yes, it’s possible to send Twitter messages via SMS. Twitter does not charge for the service, but standard SMS rates apply from your phone provider. In my case, my provider is AT&T.
To sign up for the service, just login to Twitter first if you already have an account. Next, go to http://twitter.com/devices. Select your country of residence. USA for me. Then, enter your mobile phone number. Verify your phone number by clicking on the Start button. Once verified, you can send tweets by a text message to 40404.
There are additional commands you can use such as:
FOLLOW username – Start following a user
UNFOLLOW username – Stop following a user
ON/OFF – Turn all Tweet notifications on or off
ON/OFF username – Set Tweet notifications for a user on or off (you’ll still be following them even if you set it to off)
GET username – Shows you the latest tweet from any user
RT username – Retweet a user’s latest tweet
FAV username – Favorite a user’s latest tweet
D username your-message – Send a direct message to a user