Guides
Getting files off a drive Android will not read
Written for the situation you are actually in: the drive is in your hand, the files matter, and there is no computer nearby. Each guide says plainly what is recoverable, what is not, and what to stop doing right now.
USB Data Recovery
How to recover deleted files from a USB drive using only your Android phone
Search this question and almost every answer tells you to go and find a computer. You do not need one.
USB Data Recovery
Your drive is asking to be formatted. Here is what to do instead.
The message means the index broke, not that the data is gone. Formatting is the one action that turns a recoverable drive into an unrecoverable one.
USB Data Recovery
How to recover deleted photos from an SD card with an Android phone
Camera cards are the best case in data recovery - and the phone's own card slot is the one thing that will not work.
USB Data Recovery
Quick scan or deep scan? What each one does, and when to use it
They are not fast and slow versions of the same thing. They read completely different things off the drive.
USB Data Recovery
How to open and recover a BitLocker To Go drive without a Windows PC
Encryption is not the obstacle people assume. With the password or the recovery key, the drive opens and scans like any other.
APFS Reader
How to open a Mac-formatted drive on Android, and recover files from one
A Mac drive is not broken when Android calls it corrupt. Android simply has no driver for the format.