[JeremyNT]

Yes, when you want to use a new device you sideload the key file onto it in a secure manner (i.e. USB).

On Android this presents some issues though, since the last I checked the keyfile had to be added to the "SD Card" class storage, which other apps can also access. If you are on android and go this route, be really careful about the types of apps you install that have Storage permissions (good advice in general, of course).

[40four]

Good points. I used to use Android, but recently switched to iOS, mostly because I have a Macbook pro and iMac.

I'm not blown away by the iPhone in general honestly, but being able to sync everything between the Mac devices is super convenient. The ability to easily share files wireless-ly between all of them via Airdrop is fantastic. Great use cae for moving KBDX files, or in this case key-files is super useful.