Guide: Successfully Repair iPhone 7 Display White Apple Logo
Nowadays many people are using the iPhone7. Sometimes when we turn on the phone, the white Apple logo will appear. Many people do not know why it happened. Let me give you a detailed explanation of how to solve it.
Phone model: iPhone 7
Symptom: Error 4013 is reported when restarting the system in data cable mode
Repair :
The most common problem on the Phone 7 device is the baseband portion, which is a common problem for iPhone repair technicians.After 6S, if the baseband can't be identified, device will reboot with the white apple logo and not be able to enter the system. Maybe beginners will think that there is a problem with the Nand chip, no progress bar when restore system. If the baseband part is damaged, the error code can not be reported until 80%. But the iPhone 7 generation basically has a problem with the baseband. The repair process can be divided into the following steps:
1. Use Fluke digital multimeter to measure if the capacitance is short circuit to the ground? If yes, it can basically exclude and reboot, but the short circuit of the baseband CPU fault is 45%, the power failure is 45%, and the other 10% possibility is short circuit. Most of them are easy to fix except for the iPhone 7 CPU short circuit.
2. If there is no short-circuit part, replace the power supply and try to restore the system
3. If the above solution doesn't work, it basically means that the baseband CPU has a problem and you need to resolder the baseband CPU
4. This is the baseband CPU pserdo soldering problem. Use the QUICK 861DW Hot Air Station to remove it and re-weld it.
5. The baseband CPU of iPhone 7 is close to the main CPU. When it is removed, it should pay attention to protect with heat insulation tape, so that CPU can be flameproof, and then the next step is to clean sollder pad.
6. After reinstall the baseband CPU, iPhone 7 will turn on and enter into system.
For iPhone 7 devices, it basically a baseband problem,repairman rarely encounter other problems, the repair ends here!
If you are interested in our articles, and want to learn more about mobile phone repair skills, please contact us on www.vipfixphone.com
Phone model: iPhone 7
Symptom: Error 4013 is reported when restarting the system in data cable mode
Repair :
The most common problem on the Phone 7 device is the baseband portion, which is a common problem for iPhone repair technicians.After 6S, if the baseband can't be identified, device will reboot with the white apple logo and not be able to enter the system. Maybe beginners will think that there is a problem with the Nand chip, no progress bar when restore system. If the baseband part is damaged, the error code can not be reported until 80%. But the iPhone 7 generation basically has a problem with the baseband. The repair process can be divided into the following steps:
1. Use Fluke digital multimeter to measure if the capacitance is short circuit to the ground? If yes, it can basically exclude and reboot, but the short circuit of the baseband CPU fault is 45%, the power failure is 45%, and the other 10% possibility is short circuit. Most of them are easy to fix except for the iPhone 7 CPU short circuit.
2. If there is no short-circuit part, replace the power supply and try to restore the system
3. If the above solution doesn't work, it basically means that the baseband CPU has a problem and you need to resolder the baseband CPU
4. This is the baseband CPU pserdo soldering problem. Use the QUICK 861DW Hot Air Station to remove it and re-weld it.
5. The baseband CPU of iPhone 7 is close to the main CPU. When it is removed, it should pay attention to protect with heat insulation tape, so that CPU can be flameproof, and then the next step is to clean sollder pad.
6. After reinstall the baseband CPU, iPhone 7 will turn on and enter into system.
For iPhone 7 devices, it basically a baseband problem,repairman rarely encounter other problems, the repair ends here!
If you are interested in our articles, and want to learn more about mobile phone repair skills, please contact us on www.vipfixphone.com
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