You can easily delete files from Google Drive on an Android by sending files to and deleting them from your trash folder. Here's how to do it.

You need to know how to delete downloaded files on an Android device before your phone’s performance starts to suffer, or you literally have no place to put ...

To delete all voicemails on your iPhone at once, you'll have to select them one by one. You can also export the voicemails if you want to save them.