Leak: iPhone 6 boot leakage 200mA, here is solution!

We received an iPhone 6, which has some problem, so we use DC power supply to measure its boot current, the result is that the iPhone 6 is leakage 200mA when booting.

According our experience, when iPhone comes to leakage, we must test the function of system as possible we can in advance, which will be repaired if any of the functions are tested abnormal, if all is normal, USB tube will be required to pay more attention. USB tube is also a problem, if it gets bad, the function will be normal and no problem can not be detected. If there is a electric leakage on the iPhone, you can first press the iPhone power button and loose to see how much the current will be. In the normal case, it is about one hundred. If it jumps to three hundred or four hundred, there must be electric leakage, and jump to two hundred or three hundred leakage is basically caused by several 3V: The 3v power supply of USB tube, the 3V of fingerprint and the 3V of compass.

First, we directly replace a USB tube. The result is that the current is still in the 200mA position after waiting for a few minutes.

So we wonder if there is another fault symptom happened, the last repair technician mentioned the iPhone 6 fingerprint is not good.

When heard of this problem, we can basically judge where the problem is. Connecting multimeter and trigger the on-off current with 300-400 mA, this is not normal. There must be something wrong with the fingerprint 3V. Use the multimeter to test fingerprint 3V against the ground value, it is short. This kind of situation is generally caused by one of outside capacitance is short, dismantling it!

We find out the C2133 is short circuit, pry it off with iPhone BGA Remove Tool, reboot the iPhone 6 and retest the standby value is normal, and the fingerprint is also normal now.

At last, assemble the iPhone, and test other functions, all it fine!