iPhone 11 Pro Max SIM card no serviecs, this fault is caused by power amplifier VCC shorted to ground card no serviecs.
The iPhone 8 Plus is not turned on, and the test is found to be caused by C7608_W damage, and the problem is repaired.
iPhone 7 HOME return button is too sensitive. Microscopically, it is found that the chip of fingerprint FPC is broken. After the chip is replaced, the function of HOME button is normal, and troubleshooting is done.
The temperature of iPhone 6s mobile phone is too high.Restart repeatedly and Update System reported an error of 9 after turning on Hang Logo(white apple)LOGO after bone scraping. wifi chip high temperature was found during detection, and Nand was untied to replace wifi. Troubleshooting.
iPhone 11 Fall hard has no signal, and the motherboard is slightly deformed. After separate, it was found that Inductor fell off beside Baseband CPU. After Inductor was added, it was tested with a test stand,Baseband was normal, and everything was normal after Inductor.
iPhone 6 passed without sound, often no serviecs, but still no serviecs after replacing 2G power amplifier. Then, after checking that the mobile phone has an operator, according to the previous maintenance experience, we can receive the operator's explanation that the receiving signal part of the mobile phone is good, and the problem should lie in the transmitting part. Then, a large RF is replaced, and the signal is OK after replacing the large RF.
iPhone X. Unable to activate without signal,separate was carried out on the motherboard, and it was found that the mobile phone had pad break off obviously. after scraping Solder Mask on poor line repairing, the fault was repaired.
iPhone 2 pro max has no signal. after separate, the upper layer pad break off was found. after adding some useful points,welding tested Baseband for repair.
iPhone X mobile phone screen has no response, no signal, the front Rear Camera can't be opened, and the Fall hard is too serious, so it can be repaired only by replacing the chassis assembly, screen assembly, moving the lower floor and earpiece FPC.
