Admitting There Is a Problem Is More Difficult Than the Fix
The iPhone 4's problem is simple. When your hand touches
the metal on both sides of the plastic insulator on the lower corner of the
iPhone 4, it changes the characteristics of the antenna. Exactly how it changes
the antenna depends on how conductive your hand is. So if your hands are dry,
the change might be less than if they're wet. But either way, there will be a
change. Since a change will make the antenna less efficient, the quality of
reception will drop. If you have a weak signal, you will likely lose your
connection.
None of this information is a mystery. Engineers have
been designing antennas since Mahlon Loomis created the first crude radio
during the American Civil War. Of course, Loomis didn't understand the concept
of resonance that governs antenna design, but he made use of it. In other
words, there's no excuse for engineers at Apple or anywhere else to miss the
fact that exposed metal antenna elements on the edges of a phone would be
touched by the user, and this would affect how the attached radios
performed.
There's also no reason the engineers at Apple couldn't
have figured out that protecting their antenna with a thin layer of plastic
would help prevent such problems. When I published my first antenna design in
1984, one of the key features was a layer of plastic to protect the elements.
Even in those days this was no secret. Of course, the presence of the user's
hand would still have had an effect on antenna performance, since there would
be a capacitance change, but it would not have been nearly as significant as
the change you get with a mid to high resistance short across the two
elements.
So why didn't Apple take a step so simple that it can be
performed by a piece of duct tape? Perhaps their engineers didn't know any
better, but my best guess is that it would have cost an extra few cents, and it
would have made the iPhone 4 an extra millimeter wider. It might also have
looked to Steve Jobs or whoever else was judging the device's coolness factor
that it was less cool. But the difference is that it would have worked.
So now, having made the mistake, Apple is blaming the
users for holding the phone wrong. It's also saying that all handheld wireless
phones are affected by being held, which they are, but not to nearly the extent
as the iPhone 4.
This was an engineering goof, pure and simple. Apple's
continued denial will accomplish a couple of things, such as hurting its
reputation as a designer of quality products and making the lawyers putting
together the several class-action suits richer. But what it won't do is treat
Apple's customers fairly. That is the biggest mistake of all.








