Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
But the fact remains: blocking any RF antenna will degrade signal quality. This is fact. It just becomes amplified/dramatized under apple's terrible formula.

is it blocking the antenna by hand or shorting antennas by hand is creating the issue?

friday is just a day away we will find out
 
My prediction is similar to others we've seen. They'll say something like this:

The iPhone 4 has been our most popular product ever. We've been excited and humbled by unprecedented sales volume of the past few weeks. It's been our biggest Apple launch ever. Millions of people are loving their iPhone 4's. Retina etc. Awesome.

We've made incredible improvements in the RF design of this device. Here are some examples of press coverage describing the iPhone 4's ability to hold onto calls in what used to be dead spots.

We understand that there have been reports of some people experiencing reception problems when the iPhone 4 is handled in a particular way. We agree that appearance of these problems is related to the "innovative" external antenna design, but this issue has been exacerbated by an error we made in how we display the bars in iOS. [Reference what was learned from Anandtech's analysis.]

We are extremely confident in the overall design of the product. So much so that today we're announcing that anyone who buys an iPhone 4 during its first 6 months can return it--no questions asked--within 30 days of purchase, with no restocking fee, regardless of which authorized reseller you bought it from. This includes the 1.7 million people who bought an iPhone 4 on launch day. We're confident you will love your iPhone.

In addition, next week we will release a software update that will (among other enhancements) do two things. 1) It will make our signal display more accurate, and 2) it will include an update to the radio equipment in the iPhone that will make it more effective at maximizing signal strength even when the two antennas are bridged by your hand.

Finally, anyone who has already bought an iPhone 4 will receive a $50 Apple Store gift card with our compliments. If you would prefer to make sure the two external antennas are never bridged by the way you hold your iPhone, you can buy a bumper or another case on us. If you don't feel you need a case for your iPhone (or if you already bought one) we hope you enjoy whatever you buy with the card.

That's all we have to announce for today. Thanks for coming. And screw Jason Chen. And also those dirtbags at Consumer Reports.​

I would be more than satisfied with a response like this, although the $50 gift card is probably a tad optimistic (but recall for precedent the credit to existing iPhone users when the price dropped suddenly). And I bet they don't say word one about the proximity sensor issue, or the white iPhone 4.






They should have had the kind of conference for the imac issues.
 
Do the bars on my iPhone 4 deplete when I place my hand on the bottom left? Yes.

Have I lost a phone call because of this yet? No.
 
is it blocking the antenna by hand or shorting antennas by hand is creating the issue?

friday is just a day away we will find out

Shorting makes no sense. There are two other 'gaps' on the phone. If they can't also produce this, then that statement is wrong. It is not a 'short.'
 
I don't expect much from this thing. I anticipate Apple will put a spin on it somehow and deflect the blame, if in fact they talk about the issue.

Whatever. Don't get your hopes up folks.
 
what bumper do to help to solve or reduce the problem ... now i am more confused :eek:

Edit: nothing. I'm saying there is no problem. I'm saying that the issue is hugely exaggerated by people with too much time on their hands.
 
I would love to see some solid numbers of people who actually "own" an iPhone 4 and have experienced a measurable problem in "actual" use of the phone.

According to this press release:
http://www.apple.com/pr/library/2010/06/28iphone.html

Apple had sold "over" 1.7 million phones worldwide. 1% failure would be mean that there were approximately 17,000 faulty units. Is is higher or lower than than number?

According to a Study in 2008, Blackberries had twice the failure rate of iPhones.
http://news.cnet.com/8301-1035_3-10092377-94.html

The iPhone 4 has not been released yet and I want to know if this is being blown out of proportion by lame tech bloggers with no life living in San Francisco or if it is a real problem. Are there really a lot of faulty phones or are android fanboys claiming to be iPhone 4 owners and stirring up trouble?

Need I remind you all of this?
http://www.misterbg.org/AppleProductCycle/

Thus, Aristotle spake. It made no sense, but
 
You get the prize! You actually understand what Apple has already stated (unlike so many people here who are rolling their eyes cause Apple said they would do a software fix when Apple never said anything of the type and never admitted to any antenna problem. Only to a problem in how their software told you what reception you were getting. Though I will say I'm skeptical that was an actual error...).

Sorry, just sick of people who claim that Apple is saying the problem is a software problem (like the antenna problem) when what Apple was saying is that the phone has no problem at all. It's jsut the software was set up to make it appear there was a problem when all it was was crappy reception in the first place.

Which, I think sounds like a reasonable explanation (though as I said, I'm skeptical that was an error and not done on purpose). What I think would be interesting if tests were done comparing it with other phones (like actual measuring of signal) on AT&T's network to see if it loses about the same or more signal as the other phones when the antenna area of each phone is held.

I've come to my conclusion with the problem. Whether it is right or wrong, I guess we will find out on Friday.

Let me explain. The issue is two fold.

1. Blocking the antenna of any cellular will degrade the signal quality. This has been confirmed with multiple other devices.

2. The iPhone formula for calculating reception is actually terrible. If you have seen it, you will understand. You either have 5 bars or none. The jump in dB from 5 to 0 is very small.

Number 2 is the key here. Think of it this way: The dB jump from 5 to zero bars is very very very slight in the current formula. If you are already in a low signal area, you should be displaying low bars. Currently, this is not the case, because the formula is wrong. On top of that, you begin to clamp your phone, blocking the antenna, therefore degrading the signal quality even more than the low quality area you are in.

I have never been able to replicate this issue in a good signal area. Only a terrible one. If someone can stand under a cell reception tower, and replicate this issue (5 bars to completely no service) I'd see the death grip being an issue.

But the fact remains: blocking any RF antenna will degrade signal quality. This is fact. It just becomes amplified/dramatized under apple's terrible formula.
 
Source please

Ive isn't simply a designer, he has a background in engineering as well, it's required for industrial designers in technology

I never said that he wasn't qualified, I used the word aesthetics meaning that at Apple looks can trump engineering concerns...Jobs idolizes Ives...as for the prediction, it was a Danish Professor...

Well, this must be one of the most epic "I told you so" moments in the history of consumer electronics. Professor Gert Frølund Pedersen, an antenna expert over at Denmark's Aalborg University, managed to get his concerns about the iPhone 4's external antennae on the record a cool two weeks before the phone was even released. In an interview on June 10, the Danish brainbox explained that he wasn't impressed by Steve Jobs' promises of better reception, describing external antennas as "old news," and suggested that contact with fleshlings could result in undesirable consequences to the handset's reception:

"The human tissue will in any event have an inhibitory effect on the antenna. Touch means that a larger portion of antenna energy becomes heat and lost."

Machine-translated that may be, but you get the point. Researchers at Gert's university have already shown that over 90 percent of any phone's antenna signal can be stifled by holding it in the right place, but he's highlighting the specific exposure to skin contact as a separate issue to be mindful of. Good to know we've got sharp minds out there, and as to his suggested solution, Gert says phones should ideally have two antennae that act in a sort of redundant array, so that when one is blocked, the other can pick up the slack. So, what are we going to do now, Apple?

[Thanks, Andrew]iPhone 4 antenna problems were predicted on June 10 by Danish professor originally appeared on Engadget on Sat, 26 Jun 2010 18:51:00 EDT. Please see our terms for use of feeds
 
What I think would be interesting if tests were done comparing it with other phones (like actual measuring of signal) on AT&T's network to see if it loses about the same or more signal as the other phones when the antenna area of each phone is held.

It has been demonstrated using dB values rather than bars that the iPhone 4 does suffer significantly more actual signal loss than the 3GS and Nexus One when holding in a natural position (but covering the left gap in the 4's case). The signal loss is relatively comparable across the 3 when cupping the phones tightly
 
Apple knows which serial numbers are affected. They will not do a mass recall but call on the owners to register online with their serial to make an appointment to replace the unit if they think it has the problem.

This way they don't need to replace the units of people that are not bothered by the issue and all those people that will miss the recall. And the online registering helps them estimate the number of replacement units needed.

Reports are that units are already on the market that have changed hardware, so I guess appointment can be made as of tomorrow after the press conference.

About the cost: this will not be as massive as many might think. We are not replacing faulty laptop batteries here. More likely they will only replace the antenna with a coated type that doesn't make a conductive bridge with skin. These cost a few cents. Of course there will be some brand damage and logistics costs too, but people have bad memories when it comes to these things. Remember the cracked 3G backs?

The stock will go down tomorrow, but the problem will not damage iPhone 4 sales. Monday is the time to buy AAPL
 
It has been demonstrated using dB values rather than bars that the iPhone 4 does suffer significantly more actual signal loss than the 3GS and Nexus One when holding in a natural position (but covering the left gap in the 4's case). The signal loss is relatively comparable across the 3 when cupping the phones tightly

Those numbers are bogus. Sure, a 15 year old kid can run tests all day.
 
Those numbers are bogus. Sure, a 15 year old kid can run tests all day.

Anandtech is a highly respected tech site. He knows what he is doing and did tests that are as good as anyone without expensive equipment can do.
 
I'd so laugh if Steve just stands there and goes:

"We invited you here to talk about the iPhone 4."
"Psych. It's already the best phone in the world"
"Now, iPad OS 4."

(I'd also like if they actually sort the issue out this time about the iPhone. It's boring to keep correcting claims)
 
Wirelessly posted (Mozilla/5.0 (Linux; U; Android 1.6; en-gb; Dell Streak Build/Donut) AppleWebKit/528.5+ (KHTML, like Gecko) Version/3.1.2 Mobile Safari/525.20.1)

Looking forward to seeing an end to all this crap. If it is about the signal issues, this should be the last word on it, straight from the horses mouth.

Half of the problem with the signal issue reports is that Apple's silence on the possibility of a hardware problem meant that the subject was/is regurgitated easily. Let's hope for a happy ending! :)
 
How's the Steak, Chaz? I might be interested in one when AT&T supposedly launches it on the 19th, if it's around $500.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.