It's in the center of the back of the phone
The iPhone12 series phones, in addition to some regular upgrades, also added MagSafe magnetic charging function. MagSafe is a wireless charging method launched by Apple, the principle is roughly that the mobile phone has a magnetic device, and the mobile power supply also has a magnetic absorption, so that the mobile power supply with wireless charging can be adsorbed on the mobile phone for charging.
It's in the center of the back of the phone