How to Fix iPhone Keeps Rebooting?

  If your iPhone keeps restarting over and over again, it could mean that there is a software or hardware issue with your iPhone. iPhone keeps restarting is a common headache. Many users don't even know what causes it. Here I will tell you what happened to your iPhone and how to fix it.

  First, we pressed the iPhone power button, the Apple logo appears normally, and then the iPhone restarts automatically. We tried several times, the problem was the same, the iPhone kept restarting after the Apple logo appeared.

  This iPhone has been repaired before due to overheating problem, the iPhone CPU overheated after dropping, and the iPhone screen has been replaced. After repairing, the iPhone functions are normal, but when the iPhone in standby mode, it keeps restarting. The iPhone only can be turned on by pressing the CPU, and the iPhone CPU is overheating.

  There are several reasons that can cause the iPhone restarting problem, one is the iPhone baseband power supply condition problem, the second is the iPhone Nand flash, the third is the iPhone CPU chip, and the fourth is the iPhone battery.

  According to the symptoms of this iPhone, we thought is the problem the iPhone CPU.

  Connect the iPhone to the computer, and then use iTunes to restore it, it reports an unknown error 40, seems it's the iPhone Nand flash circuit problem.

  Disassemble the iPhone, remove the iPhone screen, disconnect the iPhone battery, and then take out the iPhone motherboard.

  Use digital multimeter to measure the circuit around the iPhone Nand flash, the data measured is normal. Nest use hot air gun and BGA graver blade to remove the iPhone Nand flash, and then use ZT-X multimeter to measure the resistance value for the solder pad.

  After measurement, there are no resistance values for the back end of C0703 and C0707 capacitors. Log into the ZXW online account to check iPhone schematic diagram, these capacitors are connected with the iPhone CPU.

  Use hot air gun and CPU removal graver to pry the iPhone CPU, we found the solder pad missing some pins, which are connected to C0703 and C0707 capacitors.

  Reballing the pins by soldering iron, and then install the iPhone CPU back the motherboard. Use digital multimeter to measure it again, the data measured is normal.

  Assemble the iPhone, press the power button, the Apple logo appears normally, and then it gets into the IOS system properly.

  So, these are some tips to fix iPhone keeps restarting issue. Feel free to comment us below if we've missed any good solutions to problems.

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