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 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 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 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.