Faust29
Moderator
I seldom use MTB project as I find Trailforks is more complete for most areas I ride. But yeah, my understanding is you get more basic maps when out of cell service. They work fine in that case for following a route. But, if you want to see detailed topo map then you are often out of luck unless you have cached it ahead of time, as mentioned. I sometimes thing ahead enough to do that, but not always at high enough zoom. For my Garmin I can download a very usable base map, there is no reason why this shouldn't be possible with apps like Trailforks and MTB Project as well. It very well may be possible and I just need to do some digging. Satellite imagery would be nice too but that might be asking too much....
My Oregon 600 has a nice screen and easy touch interface that is comparable to my phone - for me, the screen is no longer a negative for the Garmin. My older Oregon 400t and my car GPS are hard to use by comparison.
I haven't done much with this, but it's out there also... I just downloaded the entire Mount Pinos area to the phone in a little over 300 MB. The maps are temporary, and expire after one month, but it's an option.
https://support.google.com/maps/answer/6291838?co=GENIE.Platform=iOS&hl=en