How to wipe Android phone before trade in or selling?

AndroidShredder provides several storage-management tools that can be useful for wipe Android phone before trade in, with options covering individual files, unused storage, and the device reset process.

How to Use

1. Make sure the phone already has a PIN, pattern, password, or biometric lock configured before opening the app.
2. Allow the required storage permission when prompted. On Android 11 or later, this includes All Files Access.
3. Open Settings from the gear icon and select the overwrite algorithm you want to use.
4. Use the built-in file browser to select the files or folders you want to remove, tap the trash icon, review the selection, and confirm the operation.
5. Open Settings, find Free Space Wipe, select Start Free Space Wipe, confirm the warning, and wait for the process to finish.

Final step

To wipe Android phone before trade in, you can clear personal files and unused storage first, then complete a standard Android factory reset before handing the device to its new owner.