Previous 1 2 3 Next 69 Replies Latest reply: Jul 13, 2010 4:58 PM by kevwright2002
MrCourtney Level 1 Level 1 (0 points)
This is from this blog - tudy-is-full-of-crap/
I pass it on to bring another side to the story.
Consumer Report iPhone4 study flawed
Posted on July 12, 2010 by Bob
Let me start off by saying that for much of my career, I worked as an electromagnetic engineer working on exactly the kind of issues that now face Apple on the iPhone4. But this isn’t about me. It is about Consumer Reports and its not so scientific testing on the iPhone 4.

Consumer reports “RF” engineers should know better than to think they can run an engineering grade test for an issue like this in a shielded room. And certainly not one with people in it.

To even reasonably run a scientific test, the iPhone should have been sitting on a non-metallic pedestal inside an anechoic chamber. The base station simulator should have been also sitting outside the chamber and had a calibrated antenna plumbed to it from inside the chamber.

I have not seen CR’s claim directly that the finger effect reduces the iPhones sensitivity by 20db as reported elsewhere, but unless CR connected to a functional point inside the iPhone that number is fantasy. Even the way they seemed to have tested the change by varying the base station simulator seems assume the iPhone receiver and/or transmitter operate in a linear fashion (the same way) across all signal strengths – bad assumption.

Bottom line. From what I can see in the reports, Consumer Reports replicated the same uncontrolled, unscientific experiments that many of the blogging sites have done.

I’m not saying that Apple has no h/w problem and they surely have a s/w issue. But I’m still wondering that if the software signal algorithm was not AFU’d in the first place how many if anyone would talking about this “problem”

I also don’t know what part of this problem is Apple’s and what part is related to the AT&T network.

And we don’t know how the observed effect is, or is not similar to other devices.

We also don’t know if placing a finger on the antenna bridge is detuning the antenna or detuning the receiver itself.

And neither does Consumer Reports.

Oh. Mr Job’s; right now. Silence is not golden. I’m quite sure Apple has these answers by now… If not, send me a few more iPhones, I’ll find a chamber and get you some answers in a day.

Ps. Blogged from my Iphone4 in a rest area on my way home from work, cause I just couldn’t help myself!

Dell Intel quad core Win7 - 27" iMac I5, Mac OS X (10.6.4), MacMini - iPhone 3G - iPhone 4
  • evil4blue Level 1 Level 1 (0 points)
    Hmm, not sure who I should believe. A consumer protection group who has been testing equipment unbiasedly for decades, or some random dude with a blog.

    Oh BTW, I'm an engineer too, and I approve of CR's testing methods. Now the vote is 1 to 1...

    Listen, I've had my iPhone for a couple weeks now, and am have issues like the rest of the world. I like the phone still over my old 3G and will be keeping it (wearing a case though).

    These problems are real and Apple needs to address them. They've made billions on this new phone already...that's a lot of people that Apple seems (at this point) to be pointing their nose up at.

    Just fix it, that's all I ask...
  • MrCourtney Level 1 Level 1 (0 points)
    Got it.
    Just presenting another opinion. I'm an electronic engineer and what he says makes some sense but that's not my area of expertise.
  • evil4blue Level 1 Level 1 (0 points)
    I wasn't trying to be a butt-head, but CR is a well run company and they are just confirming what the internet has been buzzing about for weeks. Like I said above, all I really want is for Apple to offer some sort of fix. Shoot, just tell me it can't be fixed and I'm ok with that too, at least they'd be owning up to it.

    I really hope my case helps the antenna thing, I really, really like this phone otherwise.
  • Bling Ring Level 1 Level 1 (15 points)
    I don't trust CR for nothing.. They paid off, and they dogg alota products. Inluding my beloved FJ Cruiser!

    But kudos to the an engineer for standing up to CR!
  • MrCourtney Level 1 Level 1 (0 points)
    all I really want is for Apple to offer some sort of fix. Shoot, just tell me it can't be fixed and I'm ok with that too, at least they'd be owning up to it.

    Case works for me. No signal loss now. While the bumper worked, the phone won't fit in any iPhone 4 case.
  • LorangeJuice Level 1 Level 1 (0 points)
    Bling Ring wrote:

    But kudos to the an engineer for standing up to CR!

    Agreed! I'm an engineer too. Not in the area of electrical or software, but the OP sounds like good people to me! Not just bashing CR, but outlining his/her logic.
  • xalexinchainsx Level 1 Level 1 (20 points)
    apple is surely going to keep this at the top of the forum list now...
  • pemarsh Level 1 Level 1 (0 points)
    Wake up and smell the dead roses guys...the iphone is FLAWED! Come on guys...snap out of it!! Here is my own test at wife used her 3g and me on my 4. We 3rd partied the same number...i did the death grip---within 15 seconds...drop! Replicated 3 times in a row. Happy? LOL. Seriously though...the iphone 4 is flawed.
  • MrCourtney Level 1 Level 1 (0 points)
    Some have the problem - some don't. Remember people who don't have any problems don't post here so things are going to be tilted to the negitive.

    No one is saying there is not a signal problem. We're discussing engineering tests and whether the test done can give an accurate result or not. That's all. No more.
  • modular747 Level 6 Level 6 (18,235 points)
    Just fix it, that's all I ask...

    The Duct Tape Council has just just issued a formal statement announcing their fix!
  • rgm 1947 Level 1 Level 1 (0 points)
    I am a long time, loyal Apple customer, owning almost every item they make and the phones from the original 2G version, and everyone in between including the new iphone 4. This one, is by far the worst. I constantly get dropped calls to the same people I call every day, that were never dropped before. This is a crime that they won't own up to this problem and fix it. I truly believe it is not AT&T's problem as I have other phones on AT&T phones and they work just fine calling the same people I call on my iphone 4. Fix it!! or the truth will come out and you will be the next Toyota.
  • sarjent Level 1 Level 1 (10 points)
    are they fat or skinny people? short or tall? did they try to hold it under their jaw first to exploit past dental work? Did they give their phone to a person who used the death grip successfully on a different phone to see if it still had no issues?

    So many variables...
  • thebigboy Level 1 Level 1 (0 points)
    Jobs: "And now I'd like to introduce the iPhone 4 signal enhancement kit. Once again we've outpaced the competition to market with this as well as demonstrated our innovative prowess." Big applause.

    Jobs: "And I bet you're wondering what this kit contains? Well here's a picture."

    Audience: "OOOOOOHHHHHH." Long applause.

    Jobs: "Here we have the iTape and iScissors that make up the kit. I bet they'll try to copy
    us but you know we are the orginal and best." Long applause.

    Jobs: "Be sure to visit your local Apple store asap to grab one up. The're only $50.00."
  • Bostonimann Level 1 Level 1 (20 points)
    I am a self professed Apple fan. My family each have a Macbook Pro, iPhone 4 and iPad.

    I also have relied on Consumer Reports for 20 years. They do not take any advertising and have won every lawsuit filed against them by disgruntled manufacturers. Simply put, they have no bias. They also hire top engineers in every field they do tests.

    So here is my bottom line. It is now clear that Apple has a hardware problem here and every day that goes by without a real acknowledgment is a day their terrific brand gets tarnished. Apple needs to tackle this head on.

    As for me and my family, we all have nice cases on our iPhone 4s, so we do not have thevissue (did before the cases).
Previous 1 2 3 Next