20 Feb
2011
20 Feb
'11
8:07 a.m.
I apologize for this in advance. I figure the collective GSM knowledge here
might be able to help me.
I have a SIM card that can only be used on one phone. The phone itself is
unlocked. But the SIM won't work on any other phone. Does anyone know
anything about this or how to unlock a SIM to work on any phone?
Yes, I have tried searching, but because PHONE unlocking is such a common
theme, this just passes through the cracks.
Thanks,
Scott
22 Feb
22 Feb
1:24 p.m.
On 02/20/2011 02:07 AM, Scott Weisman wrote:
I apologize for this in advance. I figure the
collective GSM knowledge
here might be able to help me.
Well, I think it is interesting from a 'scientific' point of view, i.e.
understanding how such mechanism is implemented.
I have a SIM card that can only be used on one phone.
The phone itself
is unlocked. But the SIM won't work on any other phone. Does anyone
know anything about this or how to unlock a SIM to work on any phone?
I think the first step is to trace what is happening between phone and
sim card, possibly by using osmocom simtrace.
Once you have a trace, you can look at the messages and try to identify
the mechanism the SIM uses to identify the phone. After that, you could
possibly implement a small program for a proxy SIM like bladox or
RebelSIM which patches the messages to make the SIM card happy.
All in all not an easy undertaking, but it can definitely be solved.
Regards,
Harald
4824
days inactive
4826
days old
baseband-devel@lists.osmocom.org
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participants (2)
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Harald Welte -
Scott Weisman