SOLVED:How to Fix iPhone no fingerprint repair

A dropped iPhone，the iPhone display screen has been replaced, after using for a while, the customer feedback that the fingerprint unlock function can't be used. Check fingerprint on the Settings, it prompts that "Failed, Unable to complete touch ID setup, please go back and try again". 

Use Fluke 15B+ Digital Multimeter to measure the resistance value for fingerprint socket, all is normal. Replace the fingerprint connector flex cable, we found a tear mark on the iPhone fingerprint button. Picture 18-6-1



Perhaps the iPhone fingerprint can't be used is caused by disconnection, we need to re-connect the new flex cable. The line inside the flex cable is very thin, total is 19 lines. This can't connect a single cable, we can only remove the flex cable to docking.

Take a new iPhone home button, put it under the Stereo Zoom Microscope, cut off from the position close to the original iPhone home button disconnection, take the end of the socket (try to cut a bit longer), we can separate the lines and lid on the original home button, there is a solder point, directly heated with the QUCIK 861DW hot air rework station, and then pry it with the blade. Picture 18-6-2





After separating the iPhone home button, we can cut off the fingerprint from the disconnection place, scraping fingerprint cable must be very careful, pay attention to the direction cannot be blown back

We've better find some bad home button and then scrap the flex cable to practice, the boot flex cable can also be practiced. 

After scraping，apply some tin on it, and then connect the new and old iPhone fingerprint flex cable. 

After finish the connection, first we need to test it, if the test is successful, we can reinforce it. Cut off a small piece of discarded fingerprint flex cable, use glue to cover the docking area for protection. After the glue has solidified, install the iPhone and test it again. The iPhone 6 no fingerprint failure repairing done!

Tips: Any other professional iPhone repair tutorials and related necessary tools, please contact VIP Pro Shop Team.

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