Mobile Phones

[daytripping]

I'm in the middle of a field (in a deep hole) miles from anywhere; how does the signal know to pinpoint my phone when someone in America rings me?

[StandFree1982]

The News Of The World had tapped your phone before you left

[Big Man]

Passive triangulation they cry it...

[BrianFaePerth]

I'm in the middle of a field (in a deep hole) miles from anywhere; how does the signal know to pinpoint my phone when someone in America rings me?

 

Each phone has this distinctive thing called a "phone number". This "phone number" allows Hank in Redneck, Arkansas to tap in the numbers on his phone from his pick-up truck and assuming (and it is a big assumption) he can dae it right, your phone rings.

[daytripping]

But how does the wave from the aerial know where to track you down, you could be anywhere!

[Big Man]

Your fone company knows where you are almost all of the time. Depending on what kind of phone you've got the exact process is different (so i understand), but if you've got a modern smart phone your phone is constantly sending out data packets to the nearest telephone mast (even when you think its inactive), which are then send to a base station, which beams it up to some gps satellites which works out your position. Thats how your fone has gps, and when you go on google mobile you get localised search options etc...

 

- Nae an expert like, so someone feel free to correct me but that's how i always understood it.

[daytripping]

Thanks big man, that makes a bit of sense, so the phone is sending out a look at me type signal to the nearest mast.

 

Amazing that it can send out the signal/voice and it goes via a mast to a satellite then down to a mast on the other side of the World and on to the other phone all in an instant. I suppose another thing is if your voice gets transmitted via a signal how can it change back from a signal to your actual voice on the other phone.

[Big Man]

Thanks big man, that makes a bit of sense, so the phone is sending out a look at me type signal to the nearest mast.

 

Amazing that it can send out the signal/voice and it goes via a mast to a satellite then down to a mast on the other side of the World and on to the other phone all in an instant. I suppose another thing is if your voice gets transmitted via a signal how can it change back from a signal to your actual voice on the other phone.

 

Yeh, all phones are constantly doing that so they can have you linked to the telephone mast which gives you the best signal for where you are at any particular instant. Even if you don't have a smart phone, the poli can work out your position and track your movements by getting 3 different masts to ping your phone (if its switched on) on and using that to work out your position - thats called passive triangulation.

 

This is routine sh*t now min, so if your ever on the run first thing to do is turn off your phone and take out the battery.

 

:thumbs:

[The Boofon]

Yeh, all phones are constantly doing that so they can have you linked to the telephone mast which gives you the best signal for where you are at any particular instant. Even if you don't have a smart phone, the poli can work out your position and track your movements by getting 3 different masts to ping your phone (if its switched on) on and using that to work out your position - thats called passive triangulation.

 

This is routine sh*t now min, so if your ever on the run first thing to do is turn off your phone and take out the battery.

 

:thumbs:

 

Incorrect. Save time by just taking the battery out. That turns the phone off anyway. Crucial seconds saved that may turn out to be the differenc e between escape and capture.

[Dandie1992]

Witchcraft

[tommo1903]

Incorrect. Save time by just taking the battery out. That turns the phone off anyway. Crucial seconds saved that may turn out to be the differenc e between escape and capture.

 

 

Wrong.

 

Put it on an east coast train, so by the time they triangulate the phone they'll think your in London.

[The Boofon]

Wrong.

 

Put it on an east coast train, so by the time they triangulate the phone they'll think your in London.

 

I was in London yesterday and the day before so you're advice is pish.

 

I'd have been caught quick as a flash.