Mark,

In my experience the plus sized phones have trouble with this trick.
Just curious, do you have a plus phone?

> On Sep 19, 2017, at 1:36 PM, M. Taylor <[email protected]> wrote:
> 
> Hello Everyone,  
> 
> Below, I am going to paste in the text that, up until now, it seems, would
> place iOS in a permanent field test mode.  This would allow one to see the
> strength of the cell signal in numbers, rather than in bars.  For example,
> instead of displaying 1 of 5 bars it would display -92.  The numbers are
> much more accurate in determining how much signal strength is actually
> available.  
> 
> However, after updating a Sprint phone, the following steps do not appear to
> work.  
> 
> I am wondering if this is just a Sprint issue or is this option no longer
> available in iOS 11.  
> 
> To be clear, the steps below do place the phone in field test mode but, so
> far, I cannot get the setting to remain permanent.  
> 
> Can anyone please confirm this for me?  
> 
> Please let me know what cell network you're using also.  
> 
> Thank you,.
> 
> Okay, below my signature, you will see the steps to take.  
> 
> Just so you know, these steps, will in no way damage your device or service
> for it is used by service technicians from time-to-time.
> 
> Mark
> 
> How to Display Your iPhone Signal Strength in Numbers Info
> 
> I have seen 2 different methods of putting your iPhone in Field Test mode
> permanently in iOS 7, a short one and a long one. 
> 
> The short way:
> 
> 1.
> Open your phone app and dial *3001#12345#*  and press send/call. (I
> recommend putting this in your Notepad so can copy and paste it. You will
> need it several times.)
> 
> 2.
> Press and hold the power button until the slide to close appears. 
> 3.
> Hold the home to kill the Field Test mode app (In iOS 7 it will restart, in
> iOS 6 it is now permanent.)
> 
> 4.
> Repeat step 2 and 3 a couple of times. 
> 
> 5.
> Tap the home button to close Field Test mode.
> 
> 6.
> Repeat steps 1-3 (With a little bit of luck it will work the first time
> here. I am usually able to get it the first time here. If not keep
> repeating.)
> 
> 7.
> When it works you will see the Field Test mode actually close and NOT
> restart. When this happens it is now permanent. 
> 
> The long way:
> 
> 1.
> Open your phone app and dial *3001#12345#* and press send/call.
> 
> 2.
> Press and hold the power button until the slide to close appears.
> 
> 3.
> Slide the slide bar to turn your phone off. 
> 4.
> Turn your phone back on.
> 
> 5.
> It should now be permanent.
> 
> 
> 
> 
> 
> 
> 
> Here are the instructions from Redmond Pie:
> 
> 1.
> Dial *3001#12345#* on your iPhone then press Call.
> 
> 2.
> You'll now enter Field Test mode. You'll notice a signal strength indicator
> on the upper left hand corner of your screen. You can toggle between signal
> strength bars and a number by simply tapping on it. At this point, press the
> home button to exit the app or if you would like the feature to be
> permanent, continue on. Don't worry, the process is completely reversible.
> 
> 3.
> Hold down on the Power button until you see the 'slide to power off' bar. Do
> not power off the device.
> 
> 4.
> Press down on the Home button until the app closes and you return to your
> home screen.
> 
> That's it. Even when restarting the iPhone, the signal strength can be
> toggled between bars and numbers. The closer your number is to zero, the
> stronger your signal is.
> 
> The lower your number, the stronger your signal but don't include the minus
> sign when evaluating (so, if the signal says -60, that's better than -90).
> 
> To return to the default bars permanently, follow these steps:
> 
> 1.
> Dial *3001#12345#* on your iPhone then press Call.
> 
> 2.
> Press on your Home Button once.
> 
> This trick may come in handy when you're in a dead zone and need to know
> where to move to for a better signal.
> 
> 
> 
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