-Tips-
How Do I Unregister My Mobile Device From Yahoo! Messenger?

This is one of the most asked questions by Yahoo! msgr users...
so I thought you may find this information helpful...
You have two options.. You can disable the SMS messages for yahoo messenger only, or you can unregister your mobile device for all yahoo services.

If you are wanting to disable the SMS from yahoo messenger only, then:

1. Click on 'Messenger' then 'Preferences' (or CTRL + SHIFT + P)

2. Click on the 'General' Tab

3. Uncheck the box that says 'Always sign in to my mobile device when I exit messenger'

If you would rather unregister your mobile device so you can't receive SMS for any yahoo services then:

1. Go here: http://sites.Mobile.Yahoo.com/wireless/mymobile

2. Sign in and where you see your registered mobile devices, click on 'delete'