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Apple iPhone antenna

7/2/2010 09:54 PM EDT
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rick merritt
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re: Apple iPhone antenna
rick merritt   7/2/2010 10:25:22 PM
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I'd love to hear some user experiences with the iPhone 4 and opinions of what Apple should do

prabhakar_deosthali
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re: Apple iPhone antenna
prabhakar_deosthali   7/5/2010 7:39:29 AM
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It may be worthwhile for Apple not to cover up the problem but go to the root cause. If the users are experiencing the poor signal reception then it may not be just the wrong display problem. Prabhakar Deosthali

elctrnx_lyf
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re: Apple iPhone antenna
elctrnx_lyf   7/5/2010 11:43:12 AM
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When it comes to the mobile signal reception, the RSSI (which indicates the received signal strength) levels seems to be reduced by almost 20dB when the phone is held tight in the hand. As i was following this discussion i spoke to my bro who bought a new iphone4 in Lousiana and he explained that if he holds mobile in the left hand there seems to more signal drop. May be because more palm area at the right side of the phone which consists the EDGE/UMTS antenna.

GREAT-Terry
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re: Apple iPhone antenna
GREAT-Terry   7/5/2010 5:13:35 PM
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Technically I don't like the idea of using the metal chassis as antenna. Hold such phone make yourself part of the antenna. If I were you who really love to buy the iPhone4, I would have bought the rubber bumper case.

phoenixdave
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re: Apple iPhone antenna
phoenixdave   7/5/2010 7:55:22 PM
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From the user commentary I've read, iPhone 4 users seem to be correlating signal strength loss to a drop in the on-screen bar count, and not to a drop of in-progress calls. The Apple update should take care of the first problem, but obviously will have no effect on the second problem. If the actual signal strength is a problem and not the display, the iPhone 4 image will definitely be tarnished. But will it actually negatively affect sales in a big way? Only time will tell, since the Apple devotees are a very committed group. I do think that with the new Droid-run smartphones and open-source Apps, Apple has some serious competition for their target audience, and mis-steps of any kind could prove very costly for them in the long run.

Xiphos
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Xiphos   7/5/2010 8:41:50 PM
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As an all things Apple kind of guy I was disappointed when I got my iPhone4 and could not place or receive calls while at home. My location has always been problematic, but this not even a chance to talk. I don't know what changed, but starting 4 July I received call load and clear with no drops. Overall I'm pleased with the phone and it will take some doing for serious competition to move the Apple audience. It just works.

Neo10
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Neo10   7/6/2010 6:36:53 AM
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This appears to be the first instance in a long time that Apple overlooked a certain design aspect unintentionally!

yalanand
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yalanand   7/6/2010 6:57:44 AM
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Interesting comment Xiphos, Any idea wat changed on 4th July ? Did you change you mobile holding pattern or was that service providers fault. Seems like Apple trying to push problem under the cover by giving some other reasons.

elctrnx_lyf
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re: Apple iPhone antenna
elctrnx_lyf   7/6/2010 11:49:01 AM
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Coming back to the actual technical issues mentioned about the iphone4 reception quality I'm wondering does using the metal chassis as the antenna is advantages over other methods. What is done in iphone3G? Apple claims the signal strength drop shown is just a math glitch then why no one complained with iphon3G? Apple should dig more into the issue and provide a valuable feedback to the customers.

DrQuine
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re: Apple iPhone antenna
DrQuine   7/8/2010 1:09:55 AM
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"Curiosity killed the cat, satisfaction brought it back". The stories about antenna issues for left handed users and the signal bar display algorithm error have been making the rounds in the popular press as well as more technical circles, such as EE Times. While there has been lots of discussion of the basis for the left handed antenna problem, I've seen no explanation of what the math glitch is that causes the signal strength calculations to be wrong. Engineers are curious people... Any insights?

ylshih
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re: Apple iPhone antenna
ylshih   7/8/2010 6:56:37 PM
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Regardless of whether the signal drop should have been reported as a drop of 2 bars, instead of a drop of 4-5 bars, it's clear that the design is more sensitive to user coupling into the antenna system than other phones. It could still be true that the degraded received signal strength is still better than old designs; that would require testing to prove.

UIeye
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UIeye   7/9/2010 5:21:15 PM
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I would recommend that AT&T offer free service for new IPhone customers for a few months while they are fixing the problem.

p51
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p51   7/12/2010 9:11:11 AM
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Well we shall see if the software update does indeed prevent signal degradation when held in the same way. Though my feeling is, as others have already pointed out, won't improve things.

elctrnx_lyf
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re: Apple iPhone antenna
elctrnx_lyf   7/12/2010 4:27:57 PM
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Except Apple, all of us seems to have the same feeling :P

chanj0
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re: Apple iPhone antenna
chanj0   7/12/2010 6:06:44 PM
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The idea of embedded the antenna to the chassis is quite a brilliant idea; yet, whether it is engineering possible is still a question. I believe the situation will get better if Apple can stay quiet and focus on looking for a solution in addition to finding the root cause . Regardless of the current situation, iPhone 4 is still selling dozens. Bumper is going along with it (with a cost).

selinz
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re: Apple iPhone antenna
selinz   7/13/2010 3:09:06 PM
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This entire scenario suggests that Apple needs to review their testing and qualification process. Embedding the antenna in the chassis brilliant? It's hardly brilliant if it doesn't serve the functional purpose. Quality and reliability are really secondary in this market. We have an iPod graveyard upstairs which is testimony to that. I was pleasantly surprised recently when an iPod was replaced by Apple more than 2 years out of warranty because of a "manufacturing defect." As long as phones last to the next phone upgrade, we usually don't care...

nicolas.mokhoff
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nicolas.mokhoff   7/13/2010 3:59:17 PM
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This antenna stuff all bodes unfavorably for Apple. Consumer Reports, which many consumer follow for smart buying decisions, is not recommending buying the iPhone4 until Apple fixes the "hardware" problem. It's not a matter of adjusting bars in software to suit clear reception.

prabhakar_deosthali
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re: Apple iPhone antenna
prabhakar_deosthali   7/14/2010 5:42:33 PM
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It will now be appreciated if Apple acknowledges the problem, takes its customers into confidence and takes them alon with the solution path it has planned to solve this problem. A feeback/replay to all of us by Aplle spokesperson is in order.

WSOCT
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WSOCT   7/15/2010 3:57:18 PM
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An analysis was made of the iphone 4 antenna problem. http://idisk.mac.com/rfengr00-Public/web_pics/mw101/iPhone_4_antenna.pdf Clearly not a software problem. I've heard that very quietly Apple is exchanging customers iphone 4 with an improved "antenna" version. So, if yours is not working try to exchange it.

phoenixdave
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re: Apple iPhone antenna
phoenixdave   7/21/2010 12:37:51 AM
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WSOCT -- Thanks for posting the analysis. Very well done....

Tunrayo
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re: Apple iPhone antenna
Tunrayo   7/20/2010 2:29:52 PM
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Now, here is Apple contradicting itself; if the iPhone 4 problem is due to a glitch in the Math responsible for displaying antenna bars corresponding to the level of received signal (RSSI), why have they give out rubber cases to iPhone 4 customers? Besides, I do not buy the idea of Apple consulting AT&T to determine the best formula for indicating how bars of signal strength are indicated on the iPhone 4g. This type of collaboration is anti-consumer - the air interfaces are standardized and Apple should just display what it measures of the air on its iPhone - AT&T should not be influencing this measurement. Finally, if Apple maintains it's the Math, then consumers can verify this by testing out a different phone at the same locations the iPhone 4 experiences signal degradation.

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