The magnet damages the battery.
Magnetic charging is convenient; Wired charging is faster and can achieve PD fast charging, but it is relatively not so convenient.
The Apple iPhone8 began to support wireless charging, and the iPhone12 was upgraded to MagSafe magnetic charging. The advantage of MagSafe magnetic wireless charging is that the magnetic force is quickly adsorbed to make the mobile phone and wireless charging more firm, and there is no need to worry about the location of the charge when charging.