① If your phone case is not MagSafe compatible, remove the case for wireless charging. ② Metallic or thick phone cases can interfere with the transfer of electricity to the phone. This can weaken the magnetic force and cause overheating or malfunction. ③ Wireless charging involves a process of converting electricity into a magnetic flux, which can result in more charging loss, and therefore may be slower than wired charging. ④ Because it uses electromagnetic induction, placing items like credit cards behind the phone (in the charging area) in a folio-style case can interfere with charging. Also, if you have a metal case, a thick case, or a ring holder attached near the Apple logo, it may not charge properly, or in the case of metal, it may cause radio interference. ⑤ The correct position for wireless charging is when the Apple logo on the iPhone is in the center of the wireless charger.