Use this simple device to check if a charging port on an iPhone or other Type-C smartphone is drawing power.
It is a quick way to test if the charging port is faulty, and can also be used to help detect charging IC failures.
Instructions:
Click the button to switch the LED screen. Double-click the button to revolve the LED screen. Long press the button for 3 seconds to remove all of the data. The colour and speed of the arrow on the charging sign change as the current changes. When the current changes from low to high the colour changes from yellow to orange to red and the arrow changes from slow to fast. Current and voltage can be calibrated by using 5V standard voltage, then holding the button until "factory setting" appears on the LED screen, it will then calibrate automatically.
