Originally Posted by alan1302:
“Some do and some don't - so if you don't want it to download as you go just get one with preloaded maps.
I can see a 10" tablets being a bit large on your windscreen but a 7" one would probably be fine.”
Actually a 7" tablet is a bit big to screen mount. A 7" tablet is physically much larger than that and it does block a large part of the windscreen.
What I do if I want to use mine, I have one of those plastic discs that fix to the dashboard and then fit the tablet to a modified case back piece that fits a normal phone holder. That then places the tablet away from the windscreen but still visible.