As my location changes. So does my antenna issue.

Discussion in 'iPhone' started by shawntkeating, Jun 25, 2010.

  1. shawntkeating macrumors member

    Joined:
    Jun 3, 2010
    Location:
    NJ
    #1
    I have been replicating the issue where you touch the left antenna line and the signal drops to nothing.

    Iv been able to do this over and over again while at my house..

    But...

    Today I went to the beach and while sitting out on the sand I tested the issue again...

    I COULD NOT GET THE PHONE TO REPEAT THE ISSUE!!!


    People should try this and report there findings.


    EDIT:

    More findings.

    I tried this again today in another couple locations.

    The results are consistent with my initial discovery.

    Depending on where I am (what towers, how close) I am seeing that the reception issue varies greatly.

    Some areas It drops to nothing, others I cant do it at all and other areas it drops only a couple.

    I encourage people to test this at different places and report your findings.



    ****I am not trying to make an excuse for the problem. I am just trying to see if this is PART of the problem.****
     
  2. admanimal macrumors 68040

    Joined:
    Apr 22, 2005
    #2
    Different locations have different signal qualities. It's obviously better at the beach than your house, so you don't lose any bars even though the actual db level of the phone is probably dropping.
     
  3. shawntkeating thread starter macrumors member

    Joined:
    Jun 3, 2010
    Location:
    NJ
    #3
    I tried this again today in another couple locations.

    The results are consistent with my initial discovery.

    Depending on where I am (what towers, how close) I am seeing that the reception issue varies greatly.

    Some areas It drops to nothing, others I cant do it at all and other areas it drops only a couple.
     
  4. Sean006 macrumors 6502

    Joined:
    Dec 23, 2008
    #4
    Yes I can confirm this also. Outside it never happens but inside my house yes

    I have also noticed that i never go down to no service. lowest is one bar.
     
  5. kas23 macrumors 603

    kas23

    Joined:
    Oct 28, 2007
    #5
    This is completely accurate. My phone will act differently in different locations. The problem is with driving. I don't know where the poor signal areas are and whether I should be holding my phone in an Apple-approved manner.
     
  6. ashVID macrumors regular

    Joined:
    Jun 30, 2007
    #6
    Same here, my office has 3-4 bars and normal holding causes it to drop to 1-2 but no effect on the call. At home, 5 bars goes to 1 and the other party cannot hear me.




    ash =o)
     
  7. Dokk macrumors regular

    Joined:
    Jun 20, 2010
    Location:
    IA, TX ... I never know
    #7
    Yup -- I was going to post almost exactly as you did. Another thing I notice is that when it *does* drop down (if I keep holding it and wait), the bars will usually eventually go back up.

    This makes me wonder if the report up on Appleinsider makes even more sense than I originally thought. Here's how I'm putting it together in my head.

    1. hardware design is flawed -- causes disruptions on particular frequencies (but all designs allow for disruptions in some way)

    2. the phone's software is supposed to adjust the frequency to avoid signal drop (and most phones are good at doing this)

    3. but "because the lag is allegedly not calibrated correctly" signal is dropping, sometimes to nothing

    4. as such, a software fix isn't merely a band-aid; it's fixes the actual cause of the dropped signal (miscalibration, not hardware that's any more flawed than any other phone)

    I'm not an engineer or trying to make excuses for Apple; but all that seems to make good sense to me.
     
  8. youngplaya0228 macrumors regular

    Joined:
    Jan 16, 2008
    Location:
    Texas
    #8
    Makes sense to me too (though i'm no electrical engineer either).
     
  9. iPhonedHome macrumors 6502

    Joined:
    Jun 10, 2008
    Location:
    Dallas
    #9
    I would love to go to the beach and give it a try. Hook a brotha up! ;)

    Seriously I will give a try in a bit when I go to the store.
     
  10. shawntkeating thread starter macrumors member

    Joined:
    Jun 3, 2010
    Location:
    NJ
    #10


    This does make a lot of sense. And i hope people can contribute to this test here.
     
  11. RC83 macrumors 6502

    Joined:
    Jun 15, 2010
    Location:
    Bay Area, CA
    #11
    this also points to a software/low signal issue... Not Hardware.. If it was hardware it would consistently lose signal wherever you are...
     
  12. br0adband macrumors 6502a

    br0adband

    Joined:
    Aug 29, 2006
    #12
    As noted in the post linked in my sig, I'm within a few hundred feet of a cell site tower, almost the same height actually, and totally unobstructed in terms of the signal path and I can still basically cause the iPhone to lose service totally (as verified by a Pandora audio stream that cuts out and dies) with my fingertip.

    Ain't no other cell phone I've ever used that can make that claim...

    "So magical, you can disconnect calls with a finger and without even touching the display!" ;)
     
  13. CubeHacker macrumors 65816

    CubeHacker

    Joined:
    Apr 22, 2003
    #13
    I've said this one and i'll say it again - you CANNOT use the number of bars to determine if your phone is losing signal. The only way to correctly do this is to get the signal level readings in dB off the phone itself, which can only be done if the phone is jailbroken.
     
  14. br0adband macrumors 6502a

    br0adband

    Joined:
    Aug 29, 2006
    #14
    Uhmmm... using a streaming audio app like Pandora is a good way to determine issues as well. And as noted in this video the browser is another way to see just how "bad" this issue can be for so many of us:

    http://www.youtube.com/watch?v=F6oflC4qo8M

    That video is arguably the best demonstration of what can and does happen when the signal degrades, and I don't even have to do that "Vulcan Death Grip" either - I can get the same results with the fingertip on the seam.
     
  15. dmelgar macrumors 68000

    Joined:
    Apr 29, 2005
    #15
    I am an electrical engineer and this doesn't make sense to me. I can't immediately imagine how software can recalibrate and adjust the frequency or some such thing. Doesn't mean they can't figure out a way depending on the hardware design, but its not immediately obvious how software could remotely affect an antenna who's characteristics have been altered by someone touching it.
     
  16. shawntkeating thread starter macrumors member

    Joined:
    Jun 3, 2010
    Location:
    NJ
    #16


    Yes, exactly.


    Lets look at the facts.


    It is already well known ALL phones have this design flaw of touch interference with the signal.

    Phone engineers have to counter this fundamental flaw in some way.

    And so most phones fiqure out a way to handle this good enough.


    BUT

    Then comes the iPhone 4.

    It is not tested as a prototype in this magnitude

    Thus

    The problem is not noticed OR it is only fixed to a degree.

    Phone is release and the variables increase dramatically.

    Now we shall see if the engineers can properly address this fundamental design flaw of all phones on the iPhone 4.



    One thing I do not want to see happen is a illusion pulled over our eyes by software.

    I am not saying it is not fixable through software. I am saying it needs to be fixed correctly.
     
  17. Dr Kevorkian94 macrumors 68020

    Joined:
    Jun 9, 2009
    Location:
    SI, NY
    #17
    i figured this out when the problem first presented itself (no offense). if u live in an area where the signal is strong no matter what u do the signal will only be affected a little or not at all, but if u live where the signal is not so good then u do experience the problem. This is why some are having problems and some are not.
     
  18. youngplaya0228 macrumors regular

    Joined:
    Jan 16, 2008
    Location:
    Texas
    #18
    Didn't they say that once the best signal has been compromised, there is software that automatically adjusts the signal to the next best thing? Thought that the software problem had something to do with dropping down to the next best signal. Again i'm no electrical engineer.
     
  19. Dr Kevorkian94 macrumors 68020

    Joined:
    Jun 9, 2009
    Location:
    SI, NY
    #19
    u are right its not software its hardware and the signal strength depending on where u live read my post above.
     
  20. pcorrado macrumors 6502

    Joined:
    May 21, 2008
    Location:
    Chicago, IL
    #20
    Now this but of information makes the whole situation a bit more interesting to me. I like have the others in this forum where I only seem to have the problem in weak signal areas - and also have the bars recover as well. Makes me wonder, based on your post, if there are not two separate issue involved here? A software issue as described on Appleinsider and perhaps a hardware issue that is affecting a some of the phones - I can say that there is a tower neat where my sister lives (a few hundred away) and I could not replicate this issue, however, in my home I can do it every time (per att - currently the two closest towers to me are down because they were damaged during a storm this week)
     
  21. dmelgar macrumors 68000

    Joined:
    Apr 29, 2005
    #21
    Yes, I have heard that, which is why I leave open the possibility. I assume they're referring more to channels which are pretty much running a very close to the same frequency. Touching an antenna like this can radically change its characteristics and affect all close frequencies.

    That said, the iPhone supports a bunch of different frequencies to handle different carriers around the world. The behavior could be significantly different depending on the frequency used by the carrier. Its not typically something the phone can choose.
    It supports UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz)
    GSM/EDGE (850, 900, 1800, 1900 MHz).

    Would be nice to know what frequencies are being used by those who have and don't have the problem.
     
  22. shawntkeating thread starter macrumors member

    Joined:
    Jun 3, 2010
    Location:
    NJ
    #22

    I wonder if there is any app that can show this data??? Anyones input is welcome.
     
  23. Gryzor macrumors 6502a

    Joined:
    Jun 20, 2010
    #23
    Well, the answer is simple. Move to the beach or don't hold your phone a certain way...
     
  24. TMar macrumors 68000

    TMar

    Joined:
    Jul 20, 2008
    Location:
    Ky
    #24
    So you say if I cover my ears and stand far way from a loud speaker I stand a better chance of not being able to hear it? But if I'm closer to it the possibility of that happening goes down. Expect the Nobel Prise for your astounding theory of location location location.
     
  25. shawntkeating thread starter macrumors member

    Joined:
    Jun 3, 2010
    Location:
    NJ
    #25

    I am reading more and more reports of location affecting peoples ability to replicate the problem consistently.
     

Share This Page