How to See Your iPhone Cell Signal in Numbers or dB

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How to See Your iPhone Cell Signal in Numbers or dB
4 Steps
Supplies
Embed
1
Tap Phone

Tap Phone

2
Tap Keypad then type in *3001#12345#* and press call

Tap Keypad then type in *3001#12345#* and press call

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3
Now the bars at the top left have been replaced with a negative set of numbers that are in dB.  The closer to 0 the better the signal, but your phone can work on much higher numbers, aka -100 or more.

Now the bars at the top left have been replaced with a negative set of numbers that are in dB. The closer to 0 the better the signal, but your phone can work on much higher numbers, aka -100 or more.

4
This feature helped me and AT&T resolve the issue of poor phone call quality in my house.  Not useful for anything more than that, but I hope it helps you out like it helped me.

This feature helped me and AT&T resolve the issue of poor phone call quality in my house. Not useful for anything more than that, but I hope it helps you out like it helped me.

Supplies

1 iPhone 
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