Sep302012

How could FindMyIPhone track my phone even though the SIM card was exchanged?

Lisa Fitzgerald asks:

James,

We got our stolen iPhone 4 back, even though they had a new SIM card and different carrier. I got an email yesterday telling me that the phone had been located. I tracked it down using the FindMyIPhone App and we recovered the phone.

I’m thrilled we got it back, but confused as to how the app tracked it, since the phone had a new SIM card and carrier.


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15 Answers -

0 votes

Anay Chaubal

September 30, 2012

I do not use an iPhone or any iProduct, however, I know for a fact that any cellular device uses more than a sim card to keep it connected to the network for which it is made.

There is IMEI or the International Mobile Equipment Identity, then there is the Apple device ID, apple ID, etc. all of these can be used to track any lost iDevice, in addition to the sim card. in case the sim card is removed / changed, the other ids still remain on the hardware, and can be used by products like findmyiphone to well, find your iPhone.

muotechguy

Nope. You cannot track an iPhone using IMEI or UDID; the device must remain tied to the user account.

September 30, 2012
0 votes

HLJonnalagadda

September 30, 2012

In iDevices, as well as most other smart mobiles these days, it is done by using the udid, which is a unique ID that is allocated to every mobile. As this is something that is baked right into the file system and is not based on the carrier, changing carriers would not make any difference to the unique ID and the device can be located with it.

Congratulations on getting the device back!

0 votes

Mike

September 30, 2012

Find my iPhone works via Apple ID not the SIM, IMEI or carrier.

As long as the phone has internet access (either 3G or WiFi) and wasn’t reset the phone is still associated with your Apple ID and therefor responds to “Find my iPhone”.

Basically you were fortunate enough that whoever got your phone “forgot” to do a restore.

0 votes

muotechguy

September 30, 2012

Like Mike said, it’s connected your Apple ID – your @me.com email address or whatever – not the SIM card itself. If the phone had been wiped, it wouldnt have worked – even with the same SIM in it. As it is, they simply changed the SIM, and didnt delete your data or your logins – so the moment they turned it on, it located itself under your account still.

That’s awesome that you got it back; hope you didn’t take any risks by confronting the thief or such.

0 votes

Peter Gruender

September 30, 2012

Obviously it would not be correct to explain in full how this works, as that may well help someone to stael a phone, and w don’t want that!

Every mobile has an IMEI (International Mobile Equipment Identity) number.

The IMEI number is a unique 15-17 digit serial number for mobile phones and by typing *#06# into the keypad the IMEI number will display on the screen.

This is the start point of the encrypted information that is held within the actual operating system of the mobile.

It does not matter what carrier or what card is used, this information stays the same and it is this that is broadcast whenever the phone is on.

I hope this helps.

Abbas

is there any service that can find it by an IMEI number? my SP refuses to since i don’t have insurance through them

January 9, 2013
0 votes

Ahmed Khalil

October 1, 2012

he is not clever enought to restor the factory setting of the telephone before connect to the internet, that is all as the devise still connected to your apple ID

0 votes

Phuong Doan

October 1, 2012

if i’m not wrong it tracks the device by the apple ID and only if location service is enabled

0 votes

Alex Perkins

October 1, 2012

GPS probably, just a guess. Or maybe locating any AP’s it got connected to?

0 votes

April Eum

October 8, 2012

this is insane lmao, probably because if you had your icloud still intact on the phone (no one signed off of it or the phone has been restored) therefore you were able to still track your phone. it has nothing to do with sim card, sim card will allow calls, data, sms. other wise it acts like an ipod.

0 votes

Katie Conway

October 8, 2012

The SIM card isn’t the soul source for GPS. If the phone was near WiFi or was connected to the IMEI or ICCID connectivity then it could still be tracked.

0 votes

Dawud Mehmood

October 17, 2012

because it uses your apple id for the serial no. of the phone

0 votes

ryan

November 17, 2012

Hi,
i just got my iphone stolen and wanted to know who sent you the email telling you that they had located your phone?
Thanks have a nice day!

Abrar

Hello,
I have lost my iphone please help me how i find my iphone?

Am very thanksfull if you help me.

I hope u understand.
T.c bye.

January 2, 2013
Abrar

rare you tell me or not?

January 2, 2013
0 votes

Abbas

January 9, 2013

Is there a service anywhere that can find my stolen iPhone 5 using the just the IMEI number and or serial number? My carrier, ATT is useless, they say since i didn’t buy insurance, they can’t help me locate my phone even though they have the means to do so.

0 votes

Nagi

January 11, 2013

Find my iphone tracks the apple id not the sim card, if it doesn’t work its not because the sim was exchanged but because the iphone was not connected to the internet. As long as the iphone is connected to the internet it will be able to use location services, so the app will look for any iphone logged in your apple id with location services enabled.

0 votes

Praveen Ben

April 4, 2013

If you loss your phone, and If your phone was stolen, it can be traced through IMEI number, Even if the handset was Sim changed.

you can find your phone location via IMEI number here.. http://www.trackimei.com/

From Ben,
Author of
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