inReach is not a phone. Text only. It uses the iridium network like a sat phone. Charge is per message, not per minute. You can select a plan for a certain number of messages or pay per message. You can set up 3 "preset" messages beforehand and set up contacts for them. InReach does not charge for as many preset messages as you want to send. My "I'm OK" notice is a preset one. I can also set up "call AAA and give them these coordinates" and one of my contacts will do that for me. Last time I checked, AAA would not accept texts for road service requests. Besides, when you have your RV right there you have food and water and such, so not really an emergency. Not a big deal if the tow truck doesn't come until tomorrow. Medical aid can be an emergency; InReach SOS is for life or death stuff.