The back of an iPhone is usually made of glass or aluminum, which are not magnetic and therefore cannot be directly magnetized. If you need to use the magnetic function on your iPhone, you can consider using an external accessory such as a magnetic phone case or a magnetic phone stand, which usually adds magnets to the case or stand to achieve the magnetic function. However, it should be noted that the use of magnetic accessories to avoid interference with the internal electronic components of the phone, so as not to affect the normal use of the phone.
Can magnetic, that is, wireless charging. Starting from the iPhone XS series, the MagSafe magnetic wireless charging system can be used with magnetic protective cover, magnetic back clip battery, magnetic card bag, magnetic wireless charging, magnetic car mount and other magnetic peripheral accessories.