how to restore whatsapp chat backup from local storage?
['Download a file manager app.', 'In the file manager app, navigate to sdcard/WhatsApp/Databases. ... ', 'Rename the backup file you want to restore from msgstore-YYYY-MM-DD.1.db.crypt12 to msgstore.db.crypt12. ... ', 'Uninstall and reinstall WhatsApp.', 'Tap RESTORE when prompted.']