Hello. After I installed this certificate (lrz.de/services/netz/mobil/vpn/anyconnect/rootcert.crt) I am no longer able to use knock code as a screen lock method. I found out that the name of the certificate is Deutsche Telekom Root CA 2 and disabled it from the trusted credentials menu, but I am still not able to select knock code in the lock screen -> select lock; the options Swipe and Knock Code are white and cannot be selected (It says disabled by administrator, encryption policy or credential storage)
Any help would be much appreciated

Hello. After I installed this certificate (lrz.de/services/netz/mobil/vpn/anyconnect/rootcert.crt) I am no longer to use knock code as a screen lock method. I found out that the name of the certificate is Deutsche Telekom Root CA 2 and disabled it from the trusted credentials menu, but I am still not able to select knock code in the lock screen -> select lock; the options Swipe and Knock Code are white and cannot be selected (It says disabled by administrator, encryption policy or credential storage)
Any help would be much appreciated

Its been more than couple of when im trying to find out a perfect solution for my LG OPTIMUS G (Olleh), showing null IMEI, Service disabled & a small redcross over a network bars. I've tried several baseband flashes, ROM flashes (including sling ROM), several applications for restoring & backing up IMEI but no luck. But the most weird thing that i've faced when i touch some points on LCD screen sometimes it shows signals after some moments, it disappears.
Im currently running Android 4.4.2. Help me out guys pls!