I got a new phone and installed Monerujo, but the old wallet files from another phone located in the Monerujo folder isn't be being detected on the new phone even though the directory structure is the same. Is there a specific folder that these wallet files need to be in?
From the FAQ:
If you want to use existing wallet files, you need to copy the wallet files from you current Monero client. These are:
You need to zip these files up and monerujo will detect it when you select "import wallet".