I take a Globalstar sat phone with me on rides into Mexico, and have really enjoyed the peace of mind, and ability to contact the wife every couple of days to let her know where I am.
We usually ride in pretty remote areas, where there is no cell coverage at all...so a sat phone is really the only choice.
With a little love and luck, we will get by.
2003 BMW R1150GS Adventure
1983 FJ45 Land Cruiser Troop Carrier