I wouldn't say it would make the inReach redundant, although it's going to take a substantial bite out of the low end of the market. I pay extra for unlimited

I wouldn't say it would make the inReach redundant, although it's going to take a substantial bite out of the low end of the market. I pay extra for unlimited pings on a 10 minute interval--even if I can't call for help when I'm reported overdue they'll know where I am. I also think my inReach can take a lot more abuse than an iPhone. I also think it will drive the satellite guys to offer a different service--SOS only, you pre-pay a fixed price that doesn't expire. (Actually, we already have a limited version of this--personal locator beacons have no monthly cost but have to be sent in for refurbishment if used. They are highly reliable but carry nothing but ID and GPS, you can't alter the message.)