Yes, the cpu storage memory of the mobile phone is directly welded on the motherboard, the motherboard for these parts will be changed together, the string number of the mobile phone will change, the original board data such as the user's photos will not.
The mobile phone motherboard is mainly composed of three parts
1, baseband local
Baseband chip and power management chip: act as code.
2, radio frequency local
Rf processor and RF power amplifier: complete the signal transceiver function
3. Other parts
CPU, memory, various controllers (including touch screens, Bluetooth, WIFI, sensors, and more). There are also microphones, earphones, speakers, cameras, interfaces for displaying screens, and so on.
Mobile phone motherboard, cpu does not necessarily change together, this needs to depend on the situation, it is recommended to go to the official after-sales platform after dismantling the machine test to know.
Mobile phone CPU is generally welded on the motherboard, if the motherboard has a fault need to replace the motherboard, then the CPU is really need to be replaced, this specific situation needs to get the after-sales disassembly test to know, different circumstances will have different maintenance means, after-sales is certainly not to change the CPU.
It will be changed with the CPU, because the cpu of the mobile phone is different from the computer, and it is welded to the circuit board.