Ok, I am by no means an Apple fanboy, but seriously, the Iphone is the best device ever created (and I do mean device in a general kinda sense). I read through each and every word of AnandTech's Iphone 4 review and I can see how some people can try to crucify Apple. After all, the Iphone 4 is the best smart phone ever, so it is only natural that some people will try to kick it while its down...
But, as the test results show, no matter how you hold it, it will only drop calls if you are already at a weak signal area. The actual loss of signal is 24db, which is about 20% of the total max signal one can get on any phone, so I recommend getting some facts before jumping on the Iphone lynching fervor, cause to be honest, its beginning to feel like a witch hunt...