Issue with Proximity Sensor during calls

I'm having an issue with the Proximity Sensor not properly detecting when i'm holding my phone to my ear. I can confirm that the iPhone sensor is working by covering it with my finger, but when held to my face, the screen blinks as if it cannot decide to disable the screen or enable it. It results on me hanging up, putting calls on mute, and dialing numbers accidentally while i'm on the phone. This occurs on 90% of my calls. Is anyone else experiencing this issue. I would like to confirm whether this is a software issue (Proximity Sensor sensitivity too low) or a design issue (sensor now placed towards the end of the phone).

Macbook Pro, Mac OS X (10.6.4)

Posted on Jun 23, 2010 8:09 PM

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1,688 replies

Jun 28, 2010 1:17 PM in response to mdalegre

Same issue here. I did a full restore because I read that it could be a issue with restoring from a back up from a 3G/3GS. The battery seems to be getting better but not the proximity sensor. I know it's an issue so I am careful when I place the phone to my ear. But it's slow to even allow me to hang up. Sometimes the other caller hangs up before the screen appears after pulling it away from my face.

Jun 28, 2010 1:27 PM in response to mdalegre

Same problem here in London, UK.

I notice that the IR proximity sensor is just above and slightly left of centre of the earpiece slot. On my previous 3G (and I suspect the 3GS also) it is a few millimetres to the left of the ear-slot. If anything I would think the new position would be an improvement but it appears not to be the case. I never suffered a problem with inadvertently pressing button with my ear on my old phone.

To me (as a right-hander) this is a worse problem than the antenna issue, as it affects all users

Hope a software fix can help.

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Issue with Proximity Sensor during calls

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