Prior to upgrading my phone to ICS, when I would be on a call and removed the phone from my ear the phone screen would turn back on. Now it doesn't and when I hit the power button to manually turn the screen on sometimes it will just flicker on for a second and then go black. This only happens when I am on a call though, it's fine the other times.
Can anyone help with this? I couldn't find anything in the settings menu specific to the screen on/off during a call.