SIM select file (A4) command

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benoit michau michau.benoit at gmail.com
Tue Feb 20 22:53:19 UTC 2018


Hi,

looking at a sysmoUSIM file system (see
http://michau.benoit.free.fr/codes/smartcard/sysmoUSIM/index.htm), it
looks like addresses 7F FF and 7F F0 are aliases (or symlink ?) for
the USIM AID.
No idea for the 7F 66 address.

Benoit

2018-02-20 21:02 GMT+01:00 Thomas Chen <tchen at on-go.com>:
>
>
> i noticed the GSM modem issued a couple SELECT (a4) commands that i
> cannot find the documentation for
>
> would any one be able to help identify these ???
>
> thanks
>
>
>
> 00 a4 00 04 02 7f ff
>
> 00 a4 00 04 02 7f 66
>
>
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