Some phones may show either a 1x/3G reading or a 4G/LTE reading at the top of the phone. ![]() Thus, a reading of -60 dBm is a stronger signal than -75 dBm. The closer the number is to zero, the better signal the device is receiving. ![]() For example, 60 dBm is -60 dBm in this way. On certain phones, the number may show as positive in test mode. Please notice that signal strength is expressed as a negative number and can range from about -30 to -110. They allow us to accurately know when devices are receiving a stronger signal or a weaker signal in a numerical value. These readings are expressed in decibels (dBm), a standard unit of measurement. The best way to determine the strength of signal received by your phone is to view the signal strength reading. This is difficult to accurately determine the signal strength. A phone's 3 bars may represent a stronger signal than another phone's 4 bars or even 5 bars. The issue with the bars representation is that there are no standards. ![]() ![]() Viewing your phone's actual signal strength by reading decibels is preferable to relying on the "bars" graphic as an indication of signal strength.
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