I have been using a Verizon cell phone connected to the RS232 of my laptop since 2001.
At that time it cost me $25 to buy the cable and software from Verizon. I can do everything on the internet in my motorhome as in my home. Except, at home I have Roadrunner cable which is much faster than the 14.4 KBPS of my cell phone connection. I do not pay anything extra for the laptop connection. And the slow data rate teaches you patience. I only use the cell phone connection after 9 PM and on weekends, when the minutes are free. I up load all of my pictures to my WebSite, mekkerfest.com, using this connection, along with e-mail, bill paying, and monitoring the stock market. But I am sure that by now there are much faster and better connections to the Web.
I am happy with what I have so I do not plan on looking into something faster. I still use Office 97! Why change?