cell phones
When I was actively traveling, hauling cars and parts, it was a necessity.
Since it got stolen and my provider decided to be problematic about my roaming usage and dropped my service, I have a pre-paid, which absolutely SUCKS.
They are really a handy TOOL, especially if you can do Data and pics, which I used a lot with my old one.
If you have a "Simply Everything" plan with Sprint, read the fine print, "Simply Everything" doesn't mean roaming, which they limit to 800 minutes.
I was with them for 4 years and this little footnote only came up in the last year.
I roamed in my home area, which was my highest usage area, so you can guess what happened.
Mark.