I don't use my phone. I use CarPlay. That's why I posted this photo. And that's why I keep telling you that AllTrails probably doesn't work with CarPlay.
I find Gaia a better app than OnX when I'm out of the vehicle. I'll keep using it too.
All of my geographic data is placed as a waypoint on Gaia, often I take a photo and embed it in the waypoint.
I find it easy to use, but my active map layer sometimes doesn't load in CarPlay. I haven't used it lately, perhaps that's been fixed.
I subscribe to both OnX and Gaia. I find OnX works great with CarPlay and Gaia kinda stumbles a bit. I doubt AllTrails works with CarPlay or Android Auto.
I read somewhere that the transmission system has both heating and cooling. You might talk to a Toyota service guy about how this mod could affect warranty.
I read through the Reddit thread, and I think someone at Toyota misunderstood the question.
The app works through the truck's cell connection–thus the need for a subscription. The subscription pays for the truck's cell service.
The fob connects from a radio signal.