tekgoblin writes: First we had issues with the iPhone 4 and its reception related to they way it was held. Now there are many users reporting a problem with the proximity sensor on the phone during a call. I have actually had the same issues with my new iPhone 4 as well. The problem occurs during a call when the phone is up against your ear, the sensor is supposed to turn off the screen. But users are reporting that the screen is staying lit thus causing accidental input.