I'm guessing that Android 7.0 + will be able to read the latest SanDisk 400 gig ssd card. Does Android only show 256 gig, because that's been the highest currently?
A few flagships claim to support SD cards up to 2TB, even on Marshmallow. I know the LG V10 did. Not that anyone could afford a 2TB card when they eventually come out lol