Changing flat tires?

For those of you that rely on roadside assistance, what do you do when you don't have cell phone service? When I purchased my TT the first thing I did when I got home was repack the bearings. I found that my oversized trucker's t-bar would not fit onto the lug nuts because the wheels shape. I switched to carrying a set of deep well sockets and a 30" breaker bar. I also carry a 6 ton jack and blocks.
I have used my equipment more often to help someone along the road than on my own vehicles. It is only March and I have stopped 3 times already this year.