iPhone X Error Code 4013

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Malfunction Phenomenon

The phone had been dropped before, it kept on booting loop and showed error code 4013 when restoring it with iTunes. 

iPhone X Error code 4013

Trouble Shooting

For the iPhone X Error Code 4013. Because the phone was dropped before, the possible reason might come from the connection between the top and bottom layers, especially the connection related to CPU or Baseband.

Take out the motherboard and connected it to the DC power supply machine to check the current, the current reading on the ammeter was normal. Then detach the two layers, and we found there was a crack on the middle frame nearby the SIM card connector, and some of the pads had been lost.

Check with bitmap to find out the pins which were useful, and apply the jumper wire method to fixing the bonding pads that had been missed.

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After fixing the missing pads, then we used fixture iSocket to test, the function back to normal, no boot loop anymore. Then solder the two layers of motherboard together and restored. The phone can be restored normally, the problem was resolved. 

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iPhone X Motherboard Repair Case

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REWA Academy

As an enthusiastic educator and expert in mobile technology, REWA Academy has dedicated its career to empowering individuals through technical education. With a keen focus on cellphone repairs, they have developed comprehensive online and offline courses at REWA Academy. Their expertise spans a wide array of areas, including iPhone repair training, phone hardware, software, and advanced troubleshooting techniques. Through their writings, they aim to demystify mobile technology complexities, making it accessible and understandable for both novices and professionals in the field.

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