Does anyone know the numbers of the format xxx?xxx?xxxx

[eric0668]

They are coming up when I start to text someone and their name and number start to list in a "predictive" area, not sure of its real name

where obviously the x's are the numbers and the ?'s DO show up between the numbers
I was thinking it was the SIM card number, but it just happened the last day or so, and I have been confused with some contact prolems, AND I am a total 'newb.'

My second question,..might this have something to do with this.
This is specifically related to the Samsung Vibrant. So if you are unfamiliar,please, feel free to ignore and move on

But with the phone, with the Samsung widget, Buddy ?, It is a square or ferris wheel type widget, I can select a contact put on it I can message or call them. BUT, Origininally I thought it was the FIRST number put on the widget if the person had more than a mobile number. But when I moved a couple of contacts mobile numbers first and I messaged them, and I got their HOME number, I knew that something waa up.

Might you know what that is?
AND might it hahve something to do with the number xxx?xxx?xxxxx or the SIM card numbers

Thanks a whole lot. I am not as technical as a lot of you. It is greatly appreciated.