Just when you thought we’d forgotten about the whole iPhone antenna issue, an article on Gizmodo shows us how to check our iPhone reception.

This trick will work for any iPhone rocking the new iOS 4.1 firmware.

Dial *3001#12345#* from your iPhone and watch the signal bars being replaced by a number. The lower the number, the better the signal. Hit the Home button to see the bars again.

If you have updated your iPhone to iOS 4.1, try this trick and let us know how your signal is.

  • John

    Showing 3 bars I did the field test and it was -91

  • erik

    -74 from the basement of the ed sullivan theater

  • Chris


  • Phil

    3 bars, got -89 in Ottawa, Canada

  • Jason masters

    Doesn’t work on Tmobile!

  • Ian

    -81 up in the mountains in Canada

  • Lisa

    In my bedroom 2-3 bars, I got -94, then -85, then -101. All over the place

  • Arshees J C

    Works great on IOS 4.1.

  • Mortenbr

    3 bars and i Got -90 i live om Denmark

  • Z

    And the point of it is?

    • Marco

      Z says: September 8, 2010 at 9:41 pm

      And the point of it is?

      Well the point of it is to check your reception for problems ofcourse :-s

      if you realise that -120 is the maximum low end and seeing that sevarel people tested and seem to be very near that status

      mine is 4 bars reception switching to numeric shows me -82

  • Dina

    -83 in Hoboken, NJ

  • Compu2rgod

    2 bars… 102

  • Ponycrest

    -68 in Hollywood CA.

  • soccerkrzy

    Or if you’re jailbroken, you can see it under SBSettings -> More -> System Options -> Numeric GSM Toggle.

    I’m running -84 on four bars.

  • C Wright

    3 bars and I got a -91

  • October

    The point is it seems more & more that Gizmoto has it out for Apple now… They have been on a smear campaign since the “incident”… Not that i can blame them, who wouldn’t have gotten upset… Just sayin… Consider the source…

  • Z

    Thanks @Marco, I honestly didn’t get the topic of this article… lol

    Just a suggestion to all, instead of checking your ordinary signal strength from your grandmother’s basement, why not check the death grip and see if there is a loss in network signal. I’d be more interested in reading that than some random negative/positive numbers.

  • appletiser

    couldnt get that number to work on o2-uk so used SBSettings’ Numeric GSM, it indicated -91

  • Jason masters

    On Tmobile in Chicago -91 jailbroken on 4.1

    • Z


      • Jason masters


  • Tom

    Why only 4.1? I can get real tine values from SBsettings on iOS 4.0.1

  • s.borak

    4 bars and -80, Vodafone CZ – Prague, Czech Rep.

  • Iphn4uzr

    -83 showing 4 bars.

  • Pete

    No numbers showing just bars as usual. Ie. 4 to 5 bars.

  • Arrggghhh! I got -105 on Vodaphone in Australia! That’s not very good, is it?

  • Now -111 … wait -112! I think I’ll kill myself now! Never realised just how bad my reception is at home!!!

  • Those figures are on my new iPhone4. My wife’s iPhone 3GS shows -76 in exactly the same spot!

  • iPhone 4, iOS 5.0;
    Vodafone India

    -87 >> updated 2011-11-14 at 02:05:00

    -77 >> updated 2011-11-14 at 02:06:00

    -82 >> updated 2011-11-14 at 02:06:00

    Then why do I receive NO SERVICE some times?
    Even once, it changed from VODAFONE to IDEA(another network) for about a minute!!

  • Hims

    Iphone 4….. 5.0.1!!!!! -91 (O2-uk)