Considering how much it all costs, you’d expect the iPhone 4 to be mostly better than the 3Gs. You certainly wouldn’t expect anything to be worse… but according to a test by Which? one thing is: the proximity sensor.
The proximity sensor is what blanks out the screen and deactivates the buttons on the iPhone when you lift it to your ear and use it as a phone. Otherwise you start pushing buttons with your ear – not good.
Which? found that while the 3Gs deactivated the screen at distance of 55mm from an object, the iPhone 4 waited till the target surface was 40mm away. Once the iPhone 4 senses the surface, it also takes half a second longer to activate. Plenty of time to accidently hit the End Call button with your earlobe.
It’s not a terminal make-or-break issue, but it’s interesting to know why Apple would ship something less good than the previous model. Perhaps they just had to slim it all right down and extras like the proximity model had to take a hit..
Anyone iPhone 4 users found this to be a problem?[via Which?]