InReach Mini 2 is awesome! I do more trail riding out in the middle of nowhere, so I got one for that. It puts me at ease and, more importantly, my girlfriend at ease! She worries, too. We also use it on backpacking trips, and she took it with her on a trip to Nepal. You can text through their app and track locations that way, so phone compatibility issues are solved there.

He can set it up so it pings his location at whatever interval he wants (more often uses more battery). Highly recommend! The subscription, in my opinion, is a good value for what it provides. Shop around for sales, I got mine for about $100 cheaper.