Non-original magnetic charging bank has damage to the Apple battery, cheap magnetic charger is no harm to the phone, because it is wireless charging, they are cheap, they are also guaranteed quality, so the harm to the phone is no, you can rest assured to use.
The MagSafe coil on the iPhone integrates the NFC function, and when wearing the official magnetic protection case, the corresponding animation will be displayed. In the future, more third-party manufacturers will develop interesting magnetic peripherals for this feature, such as external lenses and magnetic external batteries.