The Naked Scientists

The Naked Scientists Forum

Author Topic: When someone phones my mobile, how does it know where I am?  (Read 2285 times)


  • Guest
@simpsonpg asked the Naked Scientists:
   @NakedScientists When someone phones my mobile, how dose it know where I am?

What do you think?
« Last Edit: 06/12/2011 17:55:05 by Geezer »


Offline Bored chemist

  • Neilep Level Member
  • ******
  • Posts: 8593
  • Thanked: 41 times
    • View Profile
Because your 'phone continually broadcasts it's identity and the cellular network knows which tower picked up that broadcast.

Offline RD

  • Neilep Level Member
  • ******
  • Posts: 8088
  • Thanked: 51 times
    • View Profile
When your mobile phone is on it transmits* a signal even when you are not making a call.
This signal, which identifies you, tells the network where you are.

[* every few minutes ]

Offline BrushJohn

  • First timers
  • *
  • Posts: 1
    • View Profile
There are some service you need to activate or enter some number then you are able to know where your phone are.

Offline graham.d

  • Neilep Level Member
  • ******
  • Posts: 2208
    • View Profile
It is possible to triangulate an approximate position by noting signal strengths at more than one cell-site. This is not recorded routinely though and is not always reliable (you may only "see" one cell-site for example) but is a facility that can be invoked if required by security forces (for example). In fact there are quite a few systems available (and sold as separate software options) that the general public are unaware of, including things like remote phone tapping and recording.

The Naked Scientists Forum


SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums