How to Replace Your iPhone Signal Strength Bars With Numbers

Posted May 7, 2011 at 12:28pm by iClarified | Please help us and submit a translation by clicking here | 214008 views
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These are instructions on how to replace the signal strength bars on your iPhone with a numerical representation of reception strength. (ie. numbers instead of bars).

Step One
Press to launch MobilePhone from your Springboard.


Step Two
Tap the keyboard tab then dial *3001#12345#*.


Step Three
Your iPhone will now launch Field Test. Notice your strength bars have been replaced with a number. This number is your reception strength measured in decibels. The closer to 0dB the stronger your signal.


Step Four
Press and hold the Power button until the power slider appears.


Step Five
Press and hold the Home button until the Field Test program is terminated. Notice the signal strength numbers still remain.


To Switch Back to Bars
Dial *3001#12345#* again to enter Field Test mode.


Press the signal strength at the top left of screen to toggle between numbers and bars. Then press the Home button to exit Field Test mode.

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bubba153 - May 7, 2014 at 4:53am
Never mind. It was Siri. Apparently the Siri screen was interfering with the Field Test app closure. Turned Siri off briefly, and it worked perfectly. I can now use either the numeric meter or the dots, and can toggle between them. Thanks!!
bubba153 - May 6, 2014 at 10:46pm
iPhone 5s with iOS 7.1.1 not jailbroken (Verizon) Field Test runs fine. However, I can't get it to make the numeric change lasting. Tried the power button, then the home button, and also tried the power button AND home button (forcing a reboot). When the phone reverts to the home screen, the numeric value displays for the briefest instant, then reverts to the dots (and doesn't toggle). Dunno' if the fact that the home button brings up Siri has anything to do with this or not..... Any ideas? I'd like to use the numeric value rather than the dots.
bubba153 - May 6, 2014 at 10:45pm
iPhone 5s with iOS 7.1.1 not jailbroken (Verizon) Field Test runs fine. However, I can't get it to make the numeric change lasting. Tried the power button, then the home button, and also tried the power button AND home button (forcing a reboot). When the phone reverts to the home screen, the numeric value displays for the briefest instant, then reverts to the dots (and doesn't toggle). Dunno' if the fact that the home button brings up Siri has anything to do with this or not..... Any ideas? I'd like to use the numeric value rather than the dots.
Brandon - April 5, 2014 at 6:26am
Worked Great on iOS 7.1 on my UnJailBroken iPhone 4S! Make sure to hit send after *3001#12345#* .... Then Go to power down screen and finish by holding Home until Field Test disappears. And the magic of it is if you tap the signal indicator, it toggles between dots and numbers !
Pravin - April 8, 2014 at 4:43am
Thanks for the info. But does it work after closing the field test ? I mean on the homescreen ? Thanks again
Max E. - February 5, 2014 at 3:53am
If you are having trouble getting it working on iOS 7.1 b5, enter the field test mode and hold down the power and home buttons together until the phone restarts.
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