file kdbx read only on my smart phone.

[frpatte2]

I have keepassxc on my computer. If I want to tranfer (using the "system file selector") the database to my smartphone, it is impossible: keepass2android claims that the kdbx file is read only and it wants that this file should be copied elsewhere (but where?). If I try to copy it to another place on the smartphone, it claims that the access is denied whatever the location is...

How to tranfer the database from my computer to may smartphone? I have no google account, no cloud...

I tried keepass2android offline too and it is the same problem.

Thank you for helping.

F.P.