The pulse state refers to the charging stop, now the best is the frequency conversion pulse; It may also be because the connection line is not properly connected; But if the flash is very irregular, it may be that the charger is broken; It may also be because of excessive battery discharge, resulting in too low battery voltage, the charger can not be started, you can first charge 24-32 hours after observation; Or the internal power loss of the tram is too heavy, resulting in a voltage lower than the safe charging voltage.
Hello, it may be caused by your poor contact, I suggest you check it before charging the phone