I have searched for the answer to this question, and maybe the answer is obvious and I'm just not getting it 
I will be in a remote part of Texas and there will not be wifi nor cellular service at this location. I cannot visit the location before I get there, since it is a many hour drive to get there.
It appears that I cannot cache maps since I'm using an iOS device, all the posts and youtube videos show the caching only is a function for android devices.
So the question is this. How do I get the maps of the remote areas into the DJI Go4 app in this remote location so I can fly confidently there?
Please break it down for me, I seem to not be "seeing" what the answer to this question is . . . .
Thanks.

I will be in a remote part of Texas and there will not be wifi nor cellular service at this location. I cannot visit the location before I get there, since it is a many hour drive to get there.
It appears that I cannot cache maps since I'm using an iOS device, all the posts and youtube videos show the caching only is a function for android devices.
So the question is this. How do I get the maps of the remote areas into the DJI Go4 app in this remote location so I can fly confidently there?
Please break it down for me, I seem to not be "seeing" what the answer to this question is . . . .

Thanks.