For some reason my Galaxy S5 mini (SM-G800) is locked and asking for the alternate password instead of my fingerprint. I already restarted it, took of the battery, but it always goes to the same locked screen on boot.

I also tried the [Android Device Manager](https://www.google.com/android/devicemanager) on my google account. I tried the Lock option, changing the password, but since the phone was already locked, it is not working. By the way, the phone WiFi is on.

I searched a lot and found no solution besides resetting my phone and loosing everything. The are a lot of photos and stuff that I don't want to loose! So the reset is still not an option.

It seams so stupid that I own the google account registered on the phone, I own the fingerprint to login and I know everything is inside the phone, but I cant login! Any simple email account have a forget password option! Why the fingerprint login does not come back!?? Stupid programmers!!

[Some sites](http://forums.androidcentral.com/samsung-galaxy-s5/395840-fingerprint-scanner-alternate-password-stopped-working.html) says that after about 20 incorrect passwords tries it would give me an option to logging using my google account, but I already tried a lot of password and the only thing that happens is a wait 30 seconds countdown !

Edit 1: Just found out this site [www.unlockscreen.com](http://www.unlockscreen.com) but I don't know it is some kind of fishing/trojan or the real deal.

Edit 2: It seems my version of Android and/or fingerprint does not have the "forgotten button". It never appears. Also, I don't want to loose the warranty.