I have had an iPhone 4 for almost a month and a half and during all this time I have experienced very few of the problems that many users complain about on the Internet about the iPhone 4. It is true that the problem with the signal is real but everyone is affected (although they say it's not like that) and until I installed iOS 4.1 I had no problems with the proximity sensor. After installing iOS 4.1, it was as if I had "awakened the monster" and I already had the displeasure of waking up about 3 times to find that my call was disconnected when the phone was already held to my ear, but not immediately, but after a few minutes from the start of the conversation. It is NOT a hardware problem, otherwise it would have happened to me with iOS 4.0.1, but a software problem that Apple is unable to correct so that the sensor works without problems with all devices.
I don't have the faintest idea how this problem could be solved, in fact I don't think we could solve it with a patch or a tweak, since it depends on the way the hardware of the device works. If you have this problem and it manifests itself very often, then you can take the device to the store where you bought it and ask for it to be changed based on the problems presented. Maybe iOS 4.2 will solve this problem, but I doubt it.
