fingerprint scanner

I've had my phone for just over 2 years and its starting to fritz.. The fingerprint scanner's coating started to peel. I had to delete and re-scan my print to get it functional again, but in the end what I did is gently rub it with a cotton cloth [ handkerchief ] and removed the remaining...

This is BY FAR the best tip I've ever seen. I haven't re-scanned fingers yet (you should) but the other 2 tips have garnered performance gains immediately! Life changing!! (lol, not really of course, but this is/was biggest gripe of this phone for me) Essentially: 1. For a single fingerprint...