First, search the help docs and this forum. Maybe your question has been answered! The debugging steps can help, too. Still stuck? Delete this line and proceed.
install
To be able to help, we’ll need some more details. You can also try clicking the links in your post.
I did.
I’m confused as why a login screen would appear if just creating a new vault or opening an existing one (looks like it’s in …Pfone > Documents > 1234). Does the 1234 vault open and then are you trying login to your Obsidian account?
I would check if this is an official Obsidian release from Google Play or another trusted and safe source.
Hopefully an Android user can jump in with the exact steps for making or opening an existing vault 