Problem

IPHONES You can get a more accurate reading of an iPhone’s signal strength by dialing *3...

IPHONES You can get a more accurate reading of an iPhone’s signal strength by dialing *3001#12345#*. Field test mode is then activated and the standard signal strength bars (in the upper left corner of the display) are replaced by a negative number. The closer the negative number is to zero, the stronger the signal. Which iPhone shown below is receiving the strongest signal?

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