Suppress interfering devices such as cell phone ringtones and communications.
Do many people use cell phones to interfere with devices?
It's unpleasant to use it with a cell phone in places where you can't make calls, like trains or restaurants, so in this case, I activated the GPS jammer and placed it outside the service area. It's funny because I usually hit my phone and start slapping the lid.
However, today while I was reading on the train, people around me started shaking my phone.
I wonder if I have unknowingly turned on an interfering device, but the power is turned off properly.
By the way, my phone doesn't work either. Maybe someone else is interfering.
I wonder if the number of people disturbing it is increasing these days. I'm someone who doesn't want to have a cell phone, so I'd like to see more distracting friends, or at least make trains, restaurants, and libraries quieter.
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