1. jaleelhamid's Avatar
    What the difference? And if the number is lower in the negativity is that better or worse? Like right now mine is -115 on LTE
    04-23-2016 09:36 PM
  2. firedept10's Avatar
    What the difference? And if the number is lower in the negativity is that better or worse? Like right now mine is -115 on LTE
    Field Test Mode is a hidden feature on the iPhone which allows you to see technical details of the device, the most useful of which is the true cell signal strength displayed as a number rather than the traditional signal bars or dots.

    How to Read the Field Test Signal Indicator Numbers The numbers dont follow a scale that makes much sense to normal people, but the lower the number (in other words, the more negative) the worse the signal, and the higher the number (less negative) the better.

    • Anything above -80 is good, and would be considered full bars
    • Anything below -110 is bad, and would be considered few bars

    For example, a signal number of -105 is considerably worse than a signal of -70. Youll generally find that anything approaching -105 or lower is fairly bad reception, while anything above -80 is usually good, and if you tap the number signal its usually shown as full bars. The full range of the signal numbers extends from -40 to -120, with -130 being a nearly impossible number to see because it means no reception, and -40 would be about the strength youd get being right alongside a cell tower. Technically, the number goes all the way to -140, but you will almost never see that because it basically means there is no signal to speak of, and most users will see -120 or -130 before it switches over to the No Service indicator instead.
    04-24-2016 12:20 AM
  3. jaleelhamid's Avatar
    Field Test Mode is a hidden feature on the iPhone which allows you to see technical details of the device, the most useful of which is the true cell signal strength displayed as a number rather than the traditional signal bars or dots.

    How to Read the Field Test Signal Indicator Numbers The numbers dont follow a scale that makes much sense to normal people, but the lower the number (in other words, the more negative) the worse the signal, and the higher the number (less negative) the better.

    • Anything above -80 is good, and would be considered full bars
    • Anything below -110 is bad, and would be considered few bars

    For example, a signal number of -105 is considerably worse than a signal of -70. Youll generally find that anything approaching -105 or lower is fairly bad reception, while anything above -80 is usually good, and if you tap the number signal its usually shown as full bars. The full range of the signal numbers extends from -40 to -120, with -130 being a nearly impossible number to see because it means no reception, and -40 would be about the strength youd get being right alongside a cell tower. Technically, the number goes all the way to -140, but you will almost never see that because it basically means there is no signal to speak of, and most users will see -120 or -130 before it switches over to the No Service indicator instead.
    So in my basement i am getting LTE -117 that means I am getting really bad signal
    04-24-2016 12:38 AM
  4. Ledsteplin's Avatar
    Mine is at -114 most of the time. But I've never had a dropped call. Reception seems fine. It's a -113 now.
    A dot or bar has a wide range. 2 dots is like from maybe -104 to -115. Over -115 would be 1 dot. Something like that.
    libra89 likes this.
    04-24-2016 12:39 AM
  5. jaleelhamid's Avatar
    Ya basement I get low signal and dumb wifi calling doesn't kick in
    04-24-2016 12:47 AM
  6. anon(9789123)'s Avatar
    Wait, how do you turn that feature on? I'd actually like to see it in numbers instead of dots.
    04-24-2016 04:22 AM
  7. firedept10's Avatar
    So in my basement i am getting LTE -117 that means I am getting really bad signal
    I get -102 at work and no issues. At home I get -91. Have never noticed any difference.
    Last edited by firedept10; 04-24-2016 at 09:44 AM.
    libra89 likes this.
    04-24-2016 05:39 AM
  8. Ledsteplin's Avatar
    Wait, how do you turn that feature on? I'd actually like to see it in numbers instead of dots.
    Could not find an iMore instruction on this.
    http://osxdaily.com/2012/08/20/field...ength-numbers/
    04-24-2016 09:03 AM
  9. Just_Me_D's Avatar
    04-24-2016 09:25 AM
  10. robertk328's Avatar
    So in my basement i am getting LTE -117 that means I am getting really bad signal
    Yup! That's bad.
    04-24-2016 09:49 AM
  11. Ledsteplin's Avatar
    There's no instructions in that thread. But I'm making a guide!
    Just_Me_D likes this.
    04-24-2016 09:53 AM
  12. Ledsteplin's Avatar
    So in my basement i am getting LTE -117 that means I am getting really bad signal
    Maybe bad. Do you drop calls or have other issues with text messages? I get -115 sometimes, but don't notice any change.
    04-24-2016 09:57 AM
  13. Just_Me_D's Avatar
    There's no instructions in that thread. But I'm making a guide!
    Excellent. Thank you...
    04-24-2016 10:05 AM
  14. jaleelhamid's Avatar
    Maybe bad. Do you drop calls or have other issues with text messages? I get -115 sometimes, but don't notice any change.
    No and and when I do I speed test it seems fine but ya no dropped calls or failed texts
    04-24-2016 12:50 PM
  15. Ledsteplin's Avatar
    No and and when I do I speed test it seems fine but ya no dropped calls or failed texts
    That's great. -117 is pushing it a bit. My signal improves as soon as I step outside. I go from 2 dots to 4 or 5 when I go outside. So there's something here interrupting my signal inside. Haven't figured out what. Possibly metal.
    04-24-2016 03:29 PM

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