How-to: Change iOS Signal Bars to Number

This little hack allows you to view your signal as a dB rating instead of bars. It will show as a negative number, and the closer you are to 0 the better the signal you have. This is handy because it offers you more insight into your service beyond a 1-5 bar scale. 

1. Open the Phone application from your home screen. 

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2. Go to the dialer and enter *3001#12345#* followed by Call.

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3. An application called Field Test will open. You will notice that your signal bars have now changed to a number. Press and hold the power button until you see the “Slide to Power Off”, then press and hold the home button until you are back home.

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That’s it! To change between the bars and the number, go to the home screen or the lock screen and tap the signal indicator. 

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Enjoy!

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