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An electromagnetic engineer has found fault with the way Consumer Reports did its iPhone 4 testing, calling it "uncontrolled, unscientific" and no different than the simple experiments "that many of...
07-14-2010, 12:11 PM #1
Engineer to CR: You're Doing It Wrong
An electromagnetic engineer has found fault with the way Consumer Reports did its iPhone 4 testing, calling it "uncontrolled, unscientific" and no different than the simple experiments "that many of the blogging sites have done." While Bob Egan - who says he dealt with "exactly the kind of issues that now face Apple" in his career - stops short of saying that there is no problem, he says it was wrong of Consumer Reports to present their testing results as authoritative.
As reported here on Monday, Consumer Reports claimed to have "confirmed" the reported antenna issue, replicating the results found by many users and more than a few blogs, and saying "it's official." Its lab tests consisted of setting up three new iPhone 4s in a sealed chamber with a "base station emulator," along with three other phones including an iPhone 3GS and a Palm Pre. Consumer Reports engineers are seen in the video of the testing in the lab, surrounded by a bunch of equipment with an iPhone in a clamp that looks like a robotic hand. Sure enough, when one of the engineers touches the lower-left corner, signal drops, and the other phones perform normally in the same tests.
While the sealed chamber and base station emulator gave the ability to measure transmit power accurately, allowing more precise calculation of the difference between expected and observed signal, the test in general was no different than what Anand Shimpi had done weeks before, or really than what thousands of users have done on their own. Egan seems to be comparing the testing to an FCC certification test when he asserts that "the iPhone should have been sitting on a non-metallic pedestal inside an anechoic chamber," with no people inside the chamber and that "the base station simulator should have been also sitting outside the chamber and had a calibrated antenna plumbed to it from inside the chamber." He was asked in the comments to his blog post how they could have done the testing with no people inside. In response, Egan referred to the dummy heads used in specific absorption rate (SAR) testing of phones for the FCC. To gain meaningful information about the extent and possible cause of the problem, Egan notes, more scientific testing would have been necessary.
It should be established beyond a reasonable doubt by this point that the Death Grip problem is real. Apple has no doubt confirmed the problem in its lab testing, and may even be starting to make moves to address it. While Consumer Reports probably overreached in saying the problem was "confirmed," it's at least another report - like Anandtech's - with detailed and specific results - and will hopefully be yet another spur for Apple to step up and deal with the issue directly.
07-14-2010, 12:14 PM #2
Interesting... You what I've noticed about this whole "death grip" thing. It all depends on were you located! I've been in Tampa for a few months now and I noticed that signal in my apt is great. I tried the death grip thing and I didn't lose any signal nor dropped bars! Went to ny a few days ago and all he'll broke loose. Lol!!
Last edited by cb22; 07-14-2010 at 12:19 PM.
07-14-2010, 12:15 PM #3
07-14-2010, 12:17 PM #4
Where there's smoke...
Step up Apple.
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07-14-2010, 12:17 PM #5
07-14-2010, 12:19 PM #6
well for me i have no issues so dont really care how this plays out.
if apple gives me a free bumper ill gladly take it tho
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07-14-2010, 12:20 PM #7
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07-14-2010, 12:20 PM #8
now all u can shove it n stop talkin about Apple.HAATTERSSSSSSS
07-14-2010, 12:23 PM #9
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Consumer Reports = EPIC FAIL!
My friend purchased an IPhone 4 on Sunday and it has no problems. But 3 of my friends that purchased it on the date it came out have the death grip issue so it leads me to believe that Apple is doing something differently.
07-14-2010, 12:29 PM #10
07-14-2010, 12:30 PM #11
The CR test may not have been scientifically optimal... But, the testing does seem to do a reasonable jobe in determining how iPhone 4 performs when in use (by a human). Not how it performs when in an scientifically precise lab environment.
Though I'm happy with my iPhone and it's reception right now, I'd be happier if there was no issue at all. The CR report as it stands should help motivate Apple to help all the unhappy iPhone 4 users out.
07-14-2010, 12:33 PM #12
Typical. Ask 10 'so called' experts and you're likely to get 10 different answers. Guess the answers depend upon how much money they're paid!
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07-14-2010, 12:35 PM #13
How do we know that he isn't doing it wrong too?Name? whereswaldo
iDevice + Firmware? 32GB Black iPhone 4 iOS 5.0
Computer + OS? Dell Inspiron 15R 2nd Gen i5, 2.3 Ghz, 750GB HDD, 8GB RAM Windows 7 HP
Found yet? No
07-14-2010, 12:38 PM #14
07-14-2010, 12:39 PM #15
Yeah how much did Apple pay this guy to say that? I am sure it is a lot less than $1+ billion Apple have to pay to do a recall.
I mean if it fails with just simple test Consumer Reports did, why would there be a need to go deeper where only the phone is in the sealed room?
In real life where people owns these phones, will they be sitting in a sealed room when being used? Hell no. That is just as rediculous as AppleDON'TCare's proof to customer there is no problem with the phone by only testing sitting flat on a table.
Trying to distort the facts make this whole thing even worst, Apple screwed up they need to fix this or people will still not buy its product.
07-14-2010, 12:42 PM #16
man you need to just learn how to hold the phone............
07-14-2010, 12:57 PM #17
u know what, screw that guy and his stupid anechoic chamber, what is he dealing with?... nuclear power or something?....its obvious to everyone that this phone has problems...this makes me very very mad...
07-14-2010, 01:05 PM #18
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Meh! This guy is paid by apple. Consumer Reports is been doing this for a long time. Who is this "mamao"?
Last edited by Electrodaktylus; 07-14-2010 at 01:07 PM.
07-14-2010, 01:10 PM #19
I believe so much scrutiny only makes these people money. Apple has the spotlight and (like effen always) will maintain it. The only real question is, "Who's making money and how much in just media?"
07-14-2010, 01:12 PM #20
yeah I have the signal issue but I have a case so I could give a rats behind. For the people that dont use a case I hope you drop it on the sidewalk and ruin your phone.