According to reports, some iPhone12 users have reported problems with the fast charge. This may be due to a fault or damage to the charger or cable, or it may be due to a problem with the device's system software. It is recommended to try to replace the charger and cable, and to update the device, if the problem still exists, it is recommended to contact Apple after-sales or go to the official repair center for detection and repair. At the same time, it is also necessary to avoid using unofficial chargers and cables, so as not to damage the equipment and affect the use experience.
The problem with the iPhone 12's fast charge can be caused by a faulty charging cable or charger. The charging cable may be damaged or in poor contact, resulting in an inability to stabilize the transmission current. At the same time, the charger itself may also fail and cannot continue to provide a stable charging current. It is recommended to check whether the charging cable and charger are in good condition and try to replace the charging cable or charger with a new one to resolve the problem.
It's not a flash, it's an iPhone protection mechanism that lowers the current when it reaches a certain level of power