Fixed: iPhone 7 Plus Front Camera Not Working

Have you ever had the same trouble, we get a iPhone 7 Plus, the front camera can’t work normally. So we have to test and repair it, how to fix it step by step? Let’s check in the article!

After receiving the iPhone 7 Plus, we need to test it. Turning on it and entering iOS, open the iPhone camera icon, iPhone rear camera normal, switch to iPhone front camera, iPhone 7 plus front camera do not work, display black.

Disassemble the iPhone 7 plus with the phone opening tool, and carefully remove the iPhone motherboard.

Put the iPhone main board on the WL aluminum alloy pad.

Measure the ground resistance for iPhone front camera socket J4503 by Fluke 15B+ DigitalMultimeter, the data tested is normal. And then measure the iPhone front camera power supply, the data tested also is normal. However, when we measure the I2C bus, we find the voltage for I2C_NH_SCL_CONN only have 0.62V, which is abnormal.

After check the iPhone 7 Plus schematic diagram in the WUXINJI Dongle, we need to replace the resistor R4812.

Take an new resistor R4813, remove the old resistor R4812 from iPhone motherboard, and then install the new resistor R4813 by QUICK 861DW hot air rework station.

After installation, measure it again, the data is normal now.

Assemble the iPhone, and get into IOS to test the iPhone camera, the iPhone front camera works properly.

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