But in addition to these reasons, there is another factor that hinders the popularization of mobile phone fast charging, that is, the private fast charging agreements of various manufacturers . In order to maximize the benefits of mobile phone charging, manufacturers have used various private fast charging protocols for the fast charging of their own mobile phones. These fast charging protocols are like managing the gear position of a fan: when the charging protocol fails, the fan will only give you the lowest gear; when the charging protocol passes, the fan will run to the maximum gear.
