Authentication of a cloned SIM card - GSM-Forum

freefrag · 01-14-2007, 15:29

what happens to the original SIM card when a cloned SIM card is also available in network?

is there anyway that MSC figure out that there are two copies of a same IMSI
available in network? if yes, how?

I've never worked with a cloned SIM card, but I've heard that they both are available in network, but just one can call out; and when there's an incoming call or sms just one receives it. if it's so, which one? and why?

rbisystems · 01-14-2007, 19:04

always which is in first active mode that will accept with network..
Base station never two simillat IMSI numbers
it accept only one which as recently registered with network

freefrag · 01-14-2007, 22:01

so, is it possible that somehow BTS figure out that this is a duplicated SIM? (I know in theory it is possible but I want a practical answer regarding to how actually BTSs works)

Jhay-r · 01-15-2007, 09:37

Quote:

Originally Posted by freefrag

what happens to the original SIM card when a cloned SIM card is also available in network?

is there anyway that MSC figure out that there are two copies of a same IMSI
available in network? if yes, how?

I've never worked with a cloned SIM card, but I've heard that they both are available in network, but just one can call out; and when there's an incoming call or sms just one receives it. if it's so, which one? and why?

i think, that would depend on your provider's system.

for instance, philippines smart...

you can use the original sim and the cloned sim simultaneously.... (both with signal)

any of them can send sms, make calls, use 3g, gprs etc..

but

the last one who use the connection will be the active one....

for example, the cloned send sms...
the cloned will receive the sms and calls on his sim....

then the original made a call....
connection will transfer to him...
he will now start receiving the next sms, calls, mms, etc...

br

platforms · 01-21-2007, 14:35

Also here its that way.

GSM WIZARD · 01-25-2007, 12:32

whats up gerard?okola ki?kipya ki kyolina mu uganda?

01-26-2007, 06:39

Quote:

Originally Posted by GSM WIZARD

whats up gerard?okola ki?kipya ki kyolina mu uganda?

Plz English Only...
Thankx

01-14-2007, 15:29	#1 (permalink)
freefrag Junior Member Join Date: Jan 2007 Posts: 2 Member: 430086 Status: Offline Thanks Meter: 0	Authentication of a cloned SIM card what happens to the original SIM card when a cloned SIM card is also available in network? is there anyway that MSC figure out that there are two copies of a same IMSI available in network? if yes, how? I've never worked with a cloned SIM card, but I've heard that they both are available in network, but just one can call out; and when there's an incoming call or sms just one receives it. if it's so, which one? and why?

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01-14-2007, 19:04	#2 (permalink)
rbisystems Freak Poster Join Date: Aug 2005 Age: 39 Posts: 157 Member: 175640 Status: Offline Thanks Meter: 7	always which is in first active mode that will accept with network.. Base station never two simillat IMSI numbers it accept only one which as recently registered with network

01-14-2007, 22:01	#3 (permalink)
freefrag Junior Member Join Date: Jan 2007 Posts: 2 Member: 430086 Status: Offline Thanks Meter: 0	so, is it possible that somehow BTS figure out that this is a duplicated SIM? (I know in theory it is possible but I want a practical answer regarding to how actually BTSs works)

01-21-2007, 14:35	#5 (permalink)
platforms No Life Poster Join Date: Sep 2004 Location: London Age: 43 Posts: 520 Member: 83090 Status: Offline Sonork: 1626857 Thanks Meter: 52	Also here its that way.

01-25-2007, 12:32	#6 (permalink)
GSM WIZARD Freak Poster Join Date: Jan 2006 Location: mars under soft & hardware.... Posts: 237 Member: 217604 Status: Offline Thanks Meter: 12	whats up gerard?okola ki?kipya ki kyolina mu uganda?