Got ics 4.0!

I noticed in places where I use to get little service, I now no longer do. Which is a bummer, to me it seems the signal is worse. Or Sprint is doing overhauls and upgrades in my area. Which could be the case.
 
do you have the face unlock feature on your security menu? do you know how to get it if its not there?

I thought it was on there when I first did the upgrade to 4.04 but my ring tones were not functioning right so I took out the battery and powered the phone back on...and now the face unlock feature seems to not be there? any ideas?