[dt81]

Seriously!? After 4.1 I had no issues with the proximity sensor issue, I felt it was resolved. BUT past few days I have had the worse problem with it and its pissing me off. It actually seems worse then it was before. UGH. Anyone else with this problem..again?

[Slyfi]

i never had till this night i was on the phone and i could see the screen flickering in and out
my fix?
rotate your hand slightly so that your hand faces more to the back of your head (not a lot just slightly )
this fixed it for me at least during that phone call

[dt81]

I'll have to try that out. Thanks

[Roo Zilla]

The sensor on i4 is above the ear speaker, unlike previous iphones which had it to the left. Try moving the phone down a little bit when on a call. If that doesn't do it and you're already on 4.1, then you probably have a hardware problem and should exchange the phone.

[dt81]

Would having a screen protector on be an issue in that working correctly?

[Roo Zilla]

Would having a screen protector on be an issue in that working correctly?

I could possibly be an issue, especially those privacy ones. There's a LED that emits a light, and the sensor detects whether the light is reflected back. If the screen protector blocks the reflected light, it could interfere with the sensor.