Efficient Steps to Fix iPhone 7 Plus Charging Camera and Voice Issue

There are many different damaged parts may cause one same fault symptom, in this article, we'll repair 3 fault symptoms on iPhone 7. Before repairing, we must find out the real damaged parts, hence, we can use elimination method to fix them one by one. Let's follow the whole repair process step by step!

1. Testing When connecting charging cable to charge iPhone 7 Plus, it's not in charging state, then we connect the iPhone 7 Plus to computer, but there is no reaction either. By these symptoms, we can preliminarily judge that the charging issue is caused by iPhone USB control IC. 2. Repair Remove the iPhone USB control IC from motherboard, then use Fluke 15B+ Digital Multimeter to measure the diode data of iPhone solder joints on solder pad, we find that the diode data of iPhone USB IC C3 pin is infinitely large. This signal point is connected to iPhone main audio IC through resistor R3104. 3. Judgement According to our repair experience, we can judge there are three reasons can cause this case, one is resistor R3104 is damaged; the second one is the iPhone motherboard dropped pins and disconnection; the third one is iPhone big audio IC is damaged.

4. Repair

Remove the iPhone 7 Plus main audio IC and check it under the 7-45X Trinocular Stereo Zoom Microscope, there's a pins dropped and disconnect. Fix the jump wire of the pin, and replace the iPhone big audio IC. Now measure the diode data of USB IC C3 pin again, the data is 480, and it’s normal data. Re-install the USB control IC, insert the charger, now the charge current is 1.13A, the charge function is normal. The audio IC tin is dropped and the wire is disconnected, after fix the pins and replace iPhone big audio IC, the iPhone audio back to normal work, now we need to fix iPhone camera issue.

Because the iPhone was dropped before, observe the iPhone, we found the iPhone rear camera badly deformed, directly replace the new rear camera, the iPhone won't take photos issues has been solved.

Now, iPhone 7 Plus has been perfectly repaired! Need more iPhone 7 repair tools and related repair guide, now check on www.vipfixphone.com