Set iPhone Into Field Test Mode to See Ture iPhone Signal Strength
What’s Field Test Mode?
Field Test Mode is a hidden feature on the iPhone which allows you to see technical details of the device, the most useful of which is the true cell signal strength displayed as a number rather than the traditional signal bars or dots.
How to Enter Field Test Mode on iPhone?
This will work on any iPhone model and any version of iOS, except the very original:
* Open the Phone app as if you were going to make a regular phone call.
* From the iPhone keypad, dial *3001#12345#* and hit the “Call” button.
You will immediately see the signal numbers in the upper left corner, and you can tap around the menus to discover other random features and information that is generally meaningless outside of cell technicians and field operators.
If you hit the Home button you’ll quit out of Field Test and the signal indicator will return to dots or bars rather than the signal numbers, but it’s easy to always see the numbers too as described below.
* Tap the signal bars or signal numbers to switch between the two.
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Field Test Mode is a hidden feature on the iPhone which allows you to see technical details of the device, the most useful of which is the true cell signal strength displayed as a number rather than the traditional signal bars or dots.
How to Enter Field Test Mode on iPhone?
This will work on any iPhone model and any version of iOS, except the very original:
* Open the Phone app as if you were going to make a regular phone call.
* From the iPhone keypad, dial *3001#12345#* and hit the “Call” button.
You will immediately see the signal numbers in the upper left corner, and you can tap around the menus to discover other random features and information that is generally meaningless outside of cell technicians and field operators.
If you hit the Home button you’ll quit out of Field Test and the signal indicator will return to dots or bars rather than the signal numbers, but it’s easy to always see the numbers too as described below.
How to Read the Field Test Signal Indicator Numbers?
* Anything above -80 is good, and would be considered full bars.
* Anything below -110 is bad, and would be considered few bars.
* Anything below -110 is bad, and would be considered few bars.
To always see the signal numbers rather than the signal bars or dots:
* Dial *3001#12345#* and hit “Call” if you haven’t done so already to launch Field Test.
* Hold down the Power button until the “Slide to Power Off” message appears, then release the Power button and hold the Home button until Field Test quits.
* Dial *3001#12345#* and hit “Call” if you haven’t done so already to launch Field Test.
* Hold down the Power button until the “Slide to Power Off” message appears, then release the Power button and hold the Home button until Field Test quits.
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