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[liberationtech] hardware options for a computer phone, not a mobile phone...

Michael Rogers michael at briarproject.org
Tue Oct 30 09:48:44 PDT 2012


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On 30/10/12 16:39, John Case wrote:
> Ok, fine.  But out of curiousity, how much risk does a mobile phone
> with no sim card add to a solution like that ?
> 
> GSM, and 3G, are designed around the sim card, so I understand
> that basically nothing can happen at all without it - I feel
> relatively certain that a typical carrier deployed base station,
> etc., is "powerless" against my phone with no sim card inserted.
> 
> But what if I was very tinfoilhat-crazy-paranoid - what kind of
> scenario or attack could I be susceptible to if I had an actual
> *phone* with no sim card installed (as opposed to a device like
> samsung galaxy player that has no mobile radio installed AT ALL)
> ?

My Android phones (Huawei U8110 and Samsung Galaxy Nexus) allow
emergency calls when booted without SIM cards, suggesting they're
capable of talking to the GSM network.

Cheers,
Michael
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