How Do Cell Phone Signals Find My Cellphone

joeanonymous asked:

I live in northern Ontario. I recently traveled in Michigan and have continued to receive calls on my cellphone. As the signal is my phone? I know that the towers cells transmit signals, but I mean that when I call someone on their cell phone that the signal is not broadcast on all the towers as long as it "finds" the phone right?

2 thoughts on “How Do Cell Phone Signals Find My Cellphone”

  1. No, your cellphone is in constant communication with the cell towers that it can receive and communicate with. This tells the cell company’s computers where you are, so that when a call comes in, it goes to the tower nearest your current location.

  2. Here is a guess:

    When your cellphone operates (ie, is switched on) it sends information to the nearest towers to identify itself to the network, sort of like an ip adress. I think the identifier is the NAM code.

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