6 dice-rolled words from the eff large word list is secure enough and typing them out doesn't introduce significant friction.
Discussion
The *typing* is the issue on a mobile device. It takes me minutes sometimes to get the )(#*$)(*$# password correct. I am not built for tiny on screen keys.
lol, fair. Presumably you've enlarged the on-screen keyboard?
No. The password keyboard goes to defaults. My regular keyboard is configurable. This is very likely an idiot user issue. And, the only way to make the keyboard bigger is to go taller, which isn't exactly helpful.
I may just need to go back to T9 keyboards. heh