Will this work with a case on the phone? Alex July 13, 2018 09:03 Updated Follow A: The Universal Magnet Mount comes with a Metal Plate that you can place in between your case and your phone which will allow your phone to stick to the magnet. You can stick the metal plate on your case, as well. Related articles How can I purchase additional magnet pads? Comments 0 comments Please sign in to leave a comment.