Ever since i have been using my IP4 ( both of them as i had to replace one due to sim card issues ) On both IP4s i will be talking to someone and 75% of the time the speaker phone would kick on, I would hand up, put them on hold or something!!! I never ONCE had this issues with my 3Gs, so i looked it up and comes to find out its the proximity sensor causing all these problems! and that its the #1 complaint with the IP4! I have to hold the phone so odd so that my cheek/face doesnt touch the screen. I swear about 75% of my calls each day get disconnected or put on speaker phone because of this... Is there a fix coming? or is this a hardware issue? Jesus Apple, Did you bother testing this phone out first before you released it? With all these problems i really doubt it! I know a LOT of people are having reception issues, I do at times but not really enough to have it bother me...but this proximity sensor is really driving me nuts!