iOS 11 No Longer Shows Signal Strength As A Number

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iOS 11 No Longer Shows Signal Strength As A Number

Fritz Mills
There used to be a way of changing the signal strength bars to a number (the lower the number, the stronger the signal). I’ve had my phones set up that way for probably 5 years. In iOS 11, it no longer displays that way, and trying to re-enable it failed.



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Re: iOS 11 No Longer Shows Signal Strength As A Number

Fritz Mills

> On Sep 23, 2017, at 4:10 PM, Fritz Mills <[hidden email]> wrote:
>
> There used to be a way of changing the signal strength bars to a number (the lower the number, the stronger the signal). I’ve had my phones set up that way for probably 5 years. In iOS 11, it no longer displays that way, and trying to re-enable it failed.
>
>

Technically, what I wrote in the parentheses above is wrong. The lower the _absolute value_ of the number, the stronger the signal. The number displayed is always a negative number, so a displayed -90 strength is stronger than a -100. Sorry for the confusion.




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Re: iOS 11 No Longer Shows Signal Strength As A Number

@lbutlr
In reply to this post by Fritz Mills
On 23 Sep 2017, at 15:10, Fritz Mills <[hidden email]> wrote:
> There used to be a way of changing the signal strength bars to a number (the lower [higher] the number, the stronger the signal). I’ve had my phones set up that way for probably 5 years. In iOS 11, it no longer displays that way, and trying to re-enable it failed.

This is called "Field Test Mode"

Dial the following number on your Phone App's keypad:

*3001#12345#* and "call" the number.

In iOS 11, however, this shows a set of menus with many options. You can drill down in the LTE menu to Tx Power and see the decibels, but there doesn't appear to be a way to have them display in place of the bars.

--
Apple broke AppleScripting signatures in Mail.app, so no random signatures.




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Re: iOS 11 No Longer Shows Signal Strength As A Number

Al Varnell
In reply to this post by Fritz Mills
The Field Test numbers shown were found to be inaccurate so the feature was removed. A few of the reasons:
  • raw values are on different scales for different cellular technologies (that is, a reading of -100 dB on one iPhone is not necessarily the same as a -100 dB reading on a different iPhone)
  • raw values have different meanings for different situations (that is, a reading of -100 db in two different locations isn't always comparable)
  • raw value have very low "absolute accuracy" (that is, it’s only accurate on the border of a bar change)

-Al-

On Sat, Sep 23, 2017 at 02:10 PM, Fritz Mills wrote:
There used to be a way of changing the signal strength bars to a number (the lower the number, the stronger the signal). I’ve had my phones set up that way for probably 5 years. In iOS 11, it no longer displays that way, and trying to re-enable it failed.



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