As far as I know it depends upon the network settings enforcing if unciphered calls or data transfers are allowed or not.
 
I think few countries (including India) used to mandate the operators to negotiate null ciphering algorithm that is no ciphering - I verified this about 2 to 3 years back where my local network in bangalore was not turning on ciphering, however I am not aware of the current status.
 
Regards
--Rohit
 
 


 
On Wed, Jan 20, 2010 at 2:00 PM, Andreas.Eversberg <Andreas.Eversberg@versatel.de> wrote:
 
hi,
 
some stupid question: if a phone does not support any encryption, is it possible to use it on an official GSM network? (authentication works, of course) if so, what phone might it be?
 
regards
 
andreas
 

 

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