Chosen Solution
Hi. Due to replacement of my iPhone 5s screen I found that there was a small bracket at the 3´d screw at the home button assembly. Now the Fingerprint reader does not work - and I forgot to put in this bracket. The former owner says she never did replace the screen ( it was broken when I bought it) and she said the fingerprint reader worked. I think the sensor is an aftermarket one, but can the non working fingerprint reader have something to do with this little bracket? It is a small bracket under the marked area on the picture. It looks like it connects to the big metal plate to the lcd. Best regards
Not sure which bracket you’re talking about. Refer to this guide: iPhone 5s Home Button Replacement Step 9 shows a small metal retaining clip over the Touch ID cable. If this clip isn’t installed it’s possible that the cable worked its way loose and is no longer properly connected to the motherboard, which would mean that Touch ID may not work properly. Step 26 shows the support bracket beneath the home button. If this bracket isn’t installed properly then the home button would likely fall into the phone when you pressed it. So I’ll go with the Touch ID cable for starters. Open up the phone and verify that the end connector on the Touch ID cable and the matching connector on the motherboard are not damaged. Reseat it, then install the clip and test. If it’s working now, great! You just had a loose and/or misaligned connector. If it’s NOT working then you may have damaged the Touch ID cable and/or Home button during the screen replacement process. (This assumes that Touch ID was in fact working before you took it apart. You don’t specify whether or not you tested it first.)
