I have got an Atrix 2 running on Android 4.0.4 I cant enable Face or Pattern Unlock Feature in Security. The Pattern Unlock feature did exist since Gingerbread and then worked fine when I upgraded it to Android 4.0.4 Today I tried to enable face unlock, it asked me to enter pin. As soon as I enabled pin, face & pattern unlock feature got disabled & greyed out. It says "Disabled by administrator, encryption policy or credential storage" I dont have any administrator enabled on my phone, so this message baffles me. Could you please suggest a way out? Thanks in advance.