How do I remove unwanted files from my Android phone?

Clear your junk files

1. On your Android device, open Files by Google .
2. On the bottom left, tap Clean .
3. On the “Junk Files” card, tap Confirm and free up.
4. Tap See junk files.
5. Select the log files or temporary app files you want to clear.
6. Tap Clear .
7. On the confirmation pop up, tap Clear.

How do I remove old files from my phone?

Go to Settings > Backup & reset. Tap Factory data reset. On the next screen, tick the box marked Erase phone data. You can also choose to remove data from the memory card on some phones – so be careful what button you tap on.