iOS 4.1 Brings Field Test Mode Back to the iPhone

Users are reporting that iOS 4.1 once again allows you to enter Field Test mode on your iPhone and get a numeric representation of signal strength.

To try this you must first update your iPhone to iOS 4.1 then dial

You'll notice that your signal bars are replaced with numbers. The closer the number to 0 then higher your signal strength. For example -10 is much stronger then -100.


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