Hardware Problem: The Broken iPhone Touch ID Repair The most common iPhone Touch ID faults are mainly including Touch ID fails or Touch ID cannot work normally at all. It might be very easy to repair the most problems like wet dry sensor, sweaty finger or other software issues, however, it's quite complicated for fixing broken Touch ID on an iPhone iDevice. As we know, Touch ID chip and motherboard is absolutely matched with each other. If you only replace a new home button , the Touch ID function will disappear as the unique chip is also changed. So if the home button is unfortunately broken, how can we repair it without losing Touch ID? The article will take you to learn the details step by step!
1 Turn on the phone, we will find its Touch ID is unable to activated
2. Enter into settings – Touch ID & passcode – enter your passcode, fingerprint is grayed out 3. Take down the home button flex cable 4. Check the home button flex cable under the microscope, we found that the ribbon cable is broken.
5. Scrape the coating off the wire on the ribbon cable with knife. 6. Apply some BGA paste flux and solder the tins with soldering station.
7. Scrape the coating off the wire on the reverse side. 8. Apply some BGA paste flux, then solder the tins with soldering station.
9. Cut the wires then align them correctly, heat it up with hot air gun and weld. 10. Turn the flex cable to the reverse side, weld it with the wire. 11. Test if it is short circuit with digital multimeter. 12. Install the home button and test.
13. Apply some UV curable solder mast on the wire to fix the wielding joint.
14. Install the LCD screen assembly and test, fingerprint works well. You did it! Above all is the complete steps for iPhone Broken Touch ID Hardware repair operation. Good luck to your cell phone maintenance! More professional skills and equipment read at Vip Fix Shop Team.