iPhone 13 WiFi Chip Replacement

ID: 181962

Description: Due to Apple's part pairing system, Wi-Fi...

Steps:

  1. Cover the cameras with protection stickers.
  2. Remove the motherboard and split it.
    3. Step image Step image Step image
  3. Test the circuits related to the Wi-Fi module to verify that they are normal.
    4. Step image Step image
  4. It is not possible to read the Wi-Fi serial number (SN) simply by connecting the iPhone to the programming software. Therefore, we will remove the NAND chip.
  5. Heat the NAND chip evenly with a hot air gun at 420°C and airflow 80.
  6. Pry the NAND chip up.
  7. Apply some flux to the soldering pad of the NAND chip.
  8. Remove the tins from the soldering pad using braid and a soldering iron.
    9. Step image Step image Step image
  9. Place the NAND chip in a Luban programmer.
  10. Connect the programmer to a PC and open the programming software.
  11. Click "Check Factory Data" to read the EcID of the iPhone.
  12. Read the EcID from the NAND chip.
    13. Step image Step image Step image
  13. Place a new Wi-Fi module into the Luban programmer to write in the Wi-Fi SN.
  14. Copy the EcID and select WiFi Operations on the navigation menu.
  15. Paste the EcID and click "Check now."
  16. Then click "Write now."
  17. The Wi-Fi SN has been written into the new Wi-Fi module.
    18. Step image Step image Step image
  18. Place the signal board onto a fixture.
  19. Cover some other components with Kapton tape for protection.
  20. Heat the Wi-Fi module with a hot air gun and use a pry knife to remove the edge adhesives.
  21. Pry up the Wi-Fi module.
  22. Apply some flux to the soldering pad of the Wi-Fi module.
    23. Step image Step image Step image
  23. Remove the tins from the soldering joints of the signal board.
  24. Remove the tins from the soldering joints of the logic board.
  25. Align the new Wi-Fi module carrying the SN to the soldering pad.
  26. Solder the new Wi-Fi module with a hot air gun at 380°C and airflow 60.
    27. Step image Step image Step image
  27. Solder the NAND chip with a hot air gun at 380°C and airflow 60.
    28. Step image
  28. Put the logic board and the signal board into a motherboard-layered test fixture.
  29. Connect the iPhone 13 screen cable and the power cable.
  30. Use a pair of tweezers to trigger the power-on.
  31. The iPhone 13 should power on properly.
  32. Go to settings to check if the Wi-Fi function toggle is resumed.
    33. Step image Step image Step image
  33. Solder the signal board with the logic board.
  34. Assemble the iPhone 13 and test the Wi-Fi function.
  35. Test and Wi-Fi should be restored and connected properly.
    36. Step image Step image Step image
Back