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 | 222789 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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tdB - September 30, 2014 at 10:54pm
To get this to work for me I entered field test mode, then double tapped the home button to switch back to the dial app. I entered the code again which brought me back to the field test app. I then held the power sleep button until the slider appeared. Then held the home button to return to the normal app desktop. The -xxx dB stayed.
emstuntz - September 20, 2014 at 6:49pm
Works fine on iOS 8 :)
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.
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