So were sitting here and she explains to me how when she takes her phone away from her to look at the screen or hit a button for an auto mated system before you even touch the screen it lights up. when you put it back up to your ear the screen goes dark again AND it locks. it looks like this new update fixed the issue with hitting buttons with your cheek and best of all you dont need any 3rd party app for it.:aargh4:
BTW i had the free screen lock on my phone from nanna boat and this feature wasnt working but screen lock was interfering with it and you have to make sure you hold the phone pretty flat against your face but way to go with this new feature.