For example: Introduction to iPhone6/Plus Motherboard:
Parts on the motherboard include: A8 processor, MDM9625M baseband chip from Qualcomm, A8020 KA 1428 JR 159 from Skyworks, Avago A8010ka1422JNO27 and Triquint TQF6465437.
Chips on the back of the motherboard: Hynix's 16GB flash memory chip, Murata's 339S0228 Wi-Fi chip, 338s125/az power management chip, Broadcom's BCM5976 touch chip, M8 coprocessor and NFC chip are also from NXP, and the specific model is 65v/kloc.
iPhone？ 6? Plus is equipped with M8 motion co-processor, which enables the machine to receive motion data from accelerometer, gyroscope, compass and new barometer, and provide barometric index according to altitude.
Apple said, "The M8 sports coprocessor can continuously receive mobile data. Even in the sleep state, in the power-saving state of running fitness software, the mobile phone is running the sensor.
Extended data
The symptoms of Apple's mobile phone motherboard are as follows:
1, the phone restarts frequently and the time is uncertain.
2, the phone can be turned on, but the buttons are basically invalid, so it is impossible to switch the desktop.
There is no sound when the mobile phone is used, and there is no sound when the earphone is plugged in. The mobile phone can't be turned on, and there is no response when charging with the data cable.
4. After the message is published, it always fails to be sent, even after recharging.
5, communication is always interrupted for no reason, or unable to dial.
6. The mobile phone interface is always in a mess.
7. Adjusting the volume doesn't work, or the sound is the loudest when the volume of the device is the lowest.
8. The front and rear lenses can't be opened, or blurred after opening.
9. The card doesn't respond, and the network module turns gray.
Apple's motherboard door is a "no service" event caused by component failure on the circuit board of iPhone 7.
On February 3, 20 18, Apple said that it would get free maintenance if it encountered such problems.
Baidu Encyclopedia: Apple motherboard door
Baidu encyclopedia: mainboard maintenance