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Posts: 292 | Thanked: 131 times | Joined on Dec 2009
#31
Originally Posted by Fargus View Post
GSM covers the communication standard with the network. SIM menu access is nothing to do with GSM it is an extension to the SIM and is supported by some, but not all, operating standards. There is an issue withe USSD codes for GSM at present but that is another issue.
I didn't know any GSM phone that didn't use this extension. the first, for me, is the N900.