What is a "Cellphone Signal Strength"? The Most Authoritative Explanation.
What can make my cellphone signal stronger?
Where your phone shows bars, wireless industry folks measure signal in -dBm. A number higher than about -90dBm (like -80 or -70) is a strong signal. Get down below -110dBm and it's definitely a weak signal; below -120dBm and you'll have trouble holding onto any signal at all.What is the strongest cell phone signal?
How do I improve my cell phone signal?
How to easily boost your cell phone signal at home?
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