why did the my camera icon disappear in lock mode
why did my camera icon disappear from the lock position and my messages are green again after being blue with the 5 version
iPhone 4, iOS 5
1) double-click the home button on your lock screen to see the camera icon again. That feature is so you're phone doesn't take pictures in your pocket.
2) text messages are green, and messages sent with imessage are blue. depends on to whom you are sending messages.