A powerful magnet – I recommend these magnets at Amazon, this washer-type form can make it simpler to un-adhere them from magnetic surfaces. Businessman hand holding smartphone and finger touch on blank white monitor on white background with shadow. Human making use of cell phone, Vector illustration flat cartoon design https://felixwskcr.bloggactif.com/27191546/the-fact-about-airplane-phone-holder-diy-that-no-one-is-suggesting