iPhone 6 Compass Unable To Use- How To Fix?

The iPhone 6 compass unable to use, and it causes iPhone overheat and fast comsumption, how to fix it? 

Disassemble the iPhone by phone opening tools, and test the iPhone with DC power supply, the iPhone 6 can be turned on, and it's going to IOS system smoothly. Test it in the black screen status, the working current is always around 250mA, this is obviously abnormal. 

Enter the IOS, and test the iPhone functions, 3D touch is normal, iPhone camera is normal, the speaker is normal, when test the iPhone compass function, we found the iPhone compass function doesn't work, it can't be used. 

Carefully take out iPhone motherboard, and then measure the diode data of the compass IC power supply by digital multimeter, finding that PP3V0_IMU is short-circuited. 

Compared with iPhone schematic diagram via ZXW Dongle, finding that there are some filter capacitors on the circuit line of the PP3V0_IMU voltage. 

In order to find out the real fauly capacitor, we need to remove those capacitor one-by-one. Put iPhone motherboard under the microscope, after remove the C1902 capacitor, we found the PP3V0_IMU voltage is back to normal. 

Find a new C1902 capacitor, and then install it to the iPhone motherboard. After replacement, measure the iPhone standby current again by DC power supply,now the data tested is normal. 

Assemble the iPhone, and test the iPhone compass function in the IOS system, it works perfectly. The iPhone 6 has been fixed!