The tutorial shows end users four "elegant" ways to hold a nokia.
There's the Thumb and Finger (upper left (UL), above), the Cup (UR), the Balance (LL), and the Four Edge Grip (LR). Of course, as Nokia states in their tutorial (emphasis ours):
We’ve found any of the four grips mentioned above to be both comfortable and as you can see, offer no signal degradation whatsoever. This isn’t a feature you’ll only find on high-end Nokia devices either. It’s something that’s been a part of pretty much every Nokia device ever made (perhaps with the exception of that teardrop 3G one, which was a bit ridiculous).
The key function on any Nokia device is its ability to make phone calls. After all, that’s why we know them universally as mobile phones (or smart phones, feature phones or mobile computers – though the same grip styles work for those, too). One of the main things we’ve found about the 1 billion plus Nokia devices that are in use today is that when making a phone call, people generally tend to hold their phone like a ... well, like a phone. Providing a wide range of methods and grips for people to hold their phones, without interfering with the antennae, has been an essential feature of every device Nokia has built.
Of course, feel free to ignore all of the above because realistically, you’re free to hold your Nokia device any way you like. And you won’t suffer any signal loss. Cool, huh?
Clearly a dig at you-know-what, it is true that even in his review of the iPhone 4, the WSJ's Walt Mossberg said those with lower signal strength in their areas might want to opt for a second phone to carry around with their iPhone. That was before the issue with the antenna was known, simply based on the AT&T network.