Will this work with a case on the phone? Alex July 16, 2018 23:26 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 attach the metal plate on your case, as well. Related articles Will this hold an iPad? Does this have a laser pointer? Comments 0 comments Please sign in to leave a comment.