I've got a Galaxy S7 Edge and I really want to use the finger print scan to unlock it but it doesn't last. If I create 1 or 2 new finger print scans with the same finger, it works great for about a day, maybe a day and a half. Then it stops working (i.e. it stops recognizing my finger print) and I have to enter my password to unlock the phone. I've probably scanned my finger 20 times now. My phone does have corporate email connected so there is some imposed security including required locking. Has anyone ever experienced this before? Is there a fix? Is it possible that my fingerprints keep changing because my hands might be oily or dirty?