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General 3G Performance Hit with 2.1

Discussion in 'Android Devices' started by AAEBoiler, May 19, 2010.

  1. AAEBoiler

    AAEBoiler Member
    Thread Starter
    26

    May 18, 2010
    17
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    Male
    Aerospace Engineer
    Annapolis, MD
    I just updated my Eris to 2.1 on Monday and ever since then I haven't been getting the same 3G performance (i.e signal strength). Places where I usually saw 3 bars, I'm only seeing 1 ... or less.

    Has anyone else experienced this?
     

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  2. spanky412

    spanky412 Member
    16

    May 15, 2010
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    the burgh
    problem with 2.1 started with leaks stayed with ota

    have zero bars sometime and still able to make calls and get data
     
  3. BlazeD OnE

    38

    May 19, 2010
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    Very known problem. Same with 50% time without signal issue. and hopefully not the

    audio loss problems. Alothough you see only 1 bar. check to see what your signal -dBm

    is, the display is off, and even though it showns low bars you will have good service.
     
  4. AAEBoiler

    AAEBoiler Member
    Thread Starter
    26

    May 18, 2010
    17
    1
    26
    Male
    Aerospace Engineer
    Annapolis, MD
    My signal strength is around -100 dBm ... I'm assuming that's bad. LOL! :eek:
     
  5. Not bad; terrible.

    The signal strength number in the menu is generally more accurate then the bars in the notification area display in 2.1.
     
  6. mikey517

    mikey517 Well-Known Member
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    Nov 19, 2009
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    Frisco, what would be a good reading? I currently have -88 dBm in my office in a concrete building. Using Speedtest.net, i get a speed of approximately 1MB. At home i have gotten speeds of 2 MB on 3G
     
  7. The lower the -dbm number the faster the carrier signal between your device and the tower.

    I see -53 a lot, and -49 at best.. that's indoors and outdoors.

    Right now it's sitting at -81 (I'm in a basement) and I've got two bars; browsing, calling and using texting seem fast enough, although I understand that around the high -80s we're getting about a "dial up" speed as far as measured numbers go.
     
  8. AAEBoiler

    AAEBoiler Member
    Thread Starter
    26

    May 18, 2010
    17
    1
    26
    Male
    Aerospace Engineer
    Annapolis, MD
    Crud! I wish I had made a note of my signal strength before I updated to 2.1! :mad::mad::mad:
     
  9. Forgetting the bars and the device's stated -dbm data, how is the device working for calls, messaging, browsing, etc?
     
  10. AAEBoiler

    AAEBoiler Member
    Thread Starter
    26

    May 18, 2010
    17
    1
    26
    Male
    Aerospace Engineer
    Annapolis, MD
    I'm having no problem messaging but I don't think I've taken any calls since I updated on Monday/Tuesday. Browsing seems slightly slower than before.

    I guess I'm mostly concerned about battery drainage while my phone struggles to do work with a low signal. I've resorted to turning off 3G unless I need it (for browsing, maps, Facebook, Twitter, weather, etc.).
     
  11. Peaser

    Peaser Well-Known Member
    36

    Dec 5, 2009
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    Well I'm confused. I read in another thread that -86 was a good reading! Can someone clarify?
     
  12. Merlin615

    Merlin615 Member
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    May 1, 2010
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    dbm is a measure of signal strength not a direct correlation of speed, however the further away from zero the worse the signal, kinda like moving away from a tv tower(for those that remember using the old rabbit ears, for every 3dbm difference the signal either double or cuts in half so -86dbm is twice as bad as -83dbm.
     
  13. Peaser

    Peaser Well-Known Member
    36

    Dec 5, 2009
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    So what number is a good number....?
     
  14. Merlin615

    Merlin615 Member
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    May 1, 2010
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    While I haven't observed a solid number i get goo reception at work, in town, by a windows and I'm currently getting between -71 and -76 and on 1.5 that was 4-5 bars with good 3G, if we get more numbers we can get a range and figure a mean good number.
     
  15. mikey517

    mikey517 Well-Known Member
    16

    Nov 19, 2009
    91
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    16
  16. Merlin615

    Merlin615 Member
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    May 1, 2010
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    The average cell tower transmits at +50 to +60dbm, keep in mind this is straight off the antenna, researching to see if I can find the average signal degradation for cell signals.
     

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