The mobile modem 

and their specification 

I think that you gonna be like this article and this is an article about mobile modem and their componet and the component of mobile modem is phone card and that would be need the signal to gain those access and I think that I just want to giving some suggestion but I think that would be hard for in many cases in many city place this modem could be using well as the pc device and it also using as well as possible for watching stock and I hoping it could be usefull for many internet user especially for investor. (e-stock ) 

Sincerely 

Arief R