Force iPhone to show numerical value for signal strength
Force iPhone to show numerical value for signal strength

Cell phone jammer for schools,top 10 cell phone jammers for sale,2. Once in Field Test mode, you will see a negative number instead of the five dots in the upper-left corner. The closer to zero, the stronger your signal. As a rule of thumb, according to CNET's own...

2019/07/30 - View 37 all comments
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2. Once in Field Test mode, you will see a negative number instead of the five dots in the upper-left corner. The closer to zero, the stronger your signal. As a rule of thumb, according to CNET’s own Marguerite Reardon, "around -113 decibels is on the low end of the signal bar range, and around -50 decibels is on the high end." When I tested this hack, I had three dots for signal strength, which equated to a -100 decibels.

cell phone jammer for schools

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