Why does Android Device Manager not changes my password? I have an Android phone with password, but I don't remember it. I have access to the phone through Android Device Manager. I tried to change the password with it, but when I set the new password, Android Device Manager says:


  The phone has a password, the password you just entered will not be used


How can I change the password? I have not logged in with Samsung and adb does not recognize the device.
I solved the issue by installing ClockworkMod, and Aroma file manager with a sdcard, then I removed the next files:


password.keypattern.key
locksettings.db
locksettings.db-shm
locksettings.db-wal


Useful links:

HOW TO: Install ClockworkMod Recovery 6 on Galaxy S5 G900F

Remove /Bypass Lockscreen With Recovery