Originally Posted by
Cholula
Oops...too late for me.
I upgraded to OS 4 the day it was released.
But thanks for the explanation.
Don't worry...iOS 4 is worth losing Field Test Mode! It was fun for about 5 minutes and then grew old. You're not missing much.
Oh, and the lock icon represents that my phone was on the lock screen at the time I took the screenshot. (I'm not sure, but it may only appear when passcode lock is enabled.)