The problem is that Anandtech's conclusion is out of place with the rest of their article, even if you take into consideration the shorting of the antennae.
The iPhone 4 loses 24.6dB of signal strength when cupped at the bottom vs 17.7dB for the Nexus one. If Apple should be required to add an insulative coating to the stainless steel, then shouldn't Google also be required to make their phone thicker (or make other adjustments) until it reaches the 14.3dB reduction of the 3GS?
If Apple is required to subsidize a bumper case, to bring the signal reduction down to 7.2dB, then shouldn't Google also be required to subsidize a case (even with a case, Google's signal reduction would still be 7.7dB).
Also, the iPhone 4 can hold a call quite well at the absolute minimum signal level of -113dBm. If the Nexus One can't do this, then should we demand that Google recall the Nexus one until it can do so?
This whole issue and the hundreds of news stories around it are ridiculous. This is not a black-and-white issue of the antenna working or not. The phone has a weaker signal for some people, and a stronger signal for others, depending on how you hold it and where you are. Take that into consideration when choosing a phone. If it's not working out for you, then just return the phone and buy one you like.
What does the Nexus One have to do with the iPhone's antenna issue? There is no oversite body that is 'requiring' anyone to do anything. It's not Nexus One owners that are complaining about the antenna issue, it's iPhone users.
Actually, the people I've heard about this non-issue the most from are Android evangelists and Apple haters that are looking for any reason possible to trash Apple. So it might make sense to compare it to their beloved Nexus One in a head to head comparison.
I believe losing 24dB of signal strength is roughly ten times worse than losing 17dB. As I understand it, there is no other phone out there with this level of signal attenuation problem.
NB: I am not a signalology expert and only vaguely understand decibels.
As other's have noted, the number of dBm being received by an antenna is not really a very interesting figure. What is much more interesting is to know what is happening to the signal to noise ratio.
Imagine someone talking to you in a load bar. That person can, by shouting at you, make themself understood - but just barely. Although the signal is high, the noise (bar music, other conversations etc) is also high, and the quality of the communication is much reduced. That same person talking in a library could use a tone just barely above a whisper, and still be more clearly understood because the noise floor is so much lower in a library.
Many people don't realise that noise is actually the limiting factor in communications - if a signal has been attenuated, we can always just amplify it back up, but amplification amplifies the noise as well as the signal. Eventually, once the signal and the noise reach roughly equal amplitudes, amplification just gives you the noisy bar situation, you can't ever get back to the quiet library...
Bringing this back to the iPhone's antenna, we same to be in the library case, rather than the bar case. The signal that is being received when the antenna is being held is much quieter than what we see in other phones, but when we look at the only metric that really counts - bandwidth - we see that the iPhone is achieving consistently high transfer speeds, even when the antenna spacing has been bridged by someone's hand.
If I had to guess, based on the anandtech data, what we are seeing is an antenna that performs extremely well at reducing noise from the environment. Alternatively, the calibration of the sensor giving the signal strength readings in the 4G might not be terribly good. Either way, the independent tests done so far have all indicated that the iPhone 4G is outperforming every other phone out there at the moment, when looking at signal throughput.
The iPhone 4 loses 24.6dB of signal strength when cupped at the bottom vs 17.7dB for the Nexus one. If Apple should be required to add an insulative coating to the stainless steel, then shouldn't Google also be required to make their phone thicker (or make other adjustments) until it reaches the 14.3dB reduction of the 3GS?
If Apple is required to subsidize a bumper case, to bring the signal reduction down to 7.2dB, then shouldn't Google also be required to subsidize a case (even with a case, Google's signal reduction would still be 7.7dB).
Also, the iPhone 4 can hold a call quite well at the absolute minimum signal level of -113dBm. If the Nexus One can't do this, then should we demand that Google recall the Nexus one until it can do so?
This whole issue and the hundreds of news stories around it are ridiculous. This is not a black-and-white issue of the antenna working or not. The phone has a weaker signal for some people, and a stronger signal for others, depending on how you hold it and where you are. Take that into consideration when choosing a phone. If it's not working out for you, then just return the phone and buy one you like.