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Apple iPhone antenna

7/2/2010 09:54 PM EDT
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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.

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?

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.

yalanand
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re: Apple iPhone antenna
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.

Neo10
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re: Apple iPhone antenna
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!

Xiphos
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re: Apple iPhone antenna
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.

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.

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.

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.

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

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