Beside iPhone 4, we have got more friend here that suffer the same signal lost problem. Nokia N97 Mini is the new member in the ‘signal problem’ family that was recently tested to get a signal drops if it’s held in a normal way. However, Nokia N97 Mini is better because the signal is not dropped entirely – from 7 full bars drop to 2 bars when touched by hand.
So what’s the problem that cause the signal drop? It’s attenuation. Let’s check out the explanation below:
Every smartphone has a cellular antenna. And nearly every smartphone can lose signal strength if you hold it in a certain way. To demonstrate this, we tested iPhone 4 alongside other smartphones.
The opposite of amplification, attenuation happens whenever a signal is obstructed. All antennas — including television, radio, GPS, and cellular antennas — can experience attenuation. And with most antennas, the density and composition of the human hand can cause attenuation to a greater degree than some other materials. On a mobile phone, signal loss typically occurs when your hand attenuates the most sensitive part of the antenna. In the photos and videos below, we demonstrate how different grips cause attenuation on many popular smartphones — including iPhone 4 and iPhone 3GS.
If that’s the case, I believe more mobile phones will suffer the same problem in the future because of attenuation. I’m not sure how many of them will be included in this ‘Signal Lost’ family, but I’m sure there’s plenty of it.