If the IPhone wants to charge each other, two mobile phones need to have wireless charging coils and functions to enable it. After the wireless charging function of the mobile phone is turned on, the back of the mobile phone can be charged together. When charging near, just remind the two mobile phones to have charging animation operation, which means that the mutual charging has been successfully carried out
Iphones don't have reverse charging, so they can't charge each other.
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If you want to realize charging two iphones to each other, you can buy a dual-interface charging bank that supports charging iphones
Apple does not have the function of mutual charging, if you want to use a phone that can charge each other.