# \[74xx\] How to read SIM Linear Fixed Struct from ADF

**URL:** <https://forum.sierrawireless.com/t/74xx-how-to-read-sim-linear-fixed-struct-from-adf/9176>\
**Category:** MC/EM Series\
**Created:** [May 8, 2017, 4:17am UTC](https://forum.sierrawireless.com/t/74xx-how-to-read-sim-linear-fixed-struct-from-adf/9176 "2017-05-08T04:17:14Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![okqqkimo1](https://avatars.discourse-cdn.com/v4/letter/o/f1d935/32.png) [@okqqkimo1](https://forum.sierrawireless.com/u/okqqkimo1)\
**Post date:** [May 8, 2017, 4:17am UTC](https://forum.sierrawireless.com/t/74xx-how-to-read-sim-linear-fixed-struct-from-adf/9176/1 "2017-05-08T04:17:14Z")

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Hi All  
I want to read SIM Linear Fixed from ADF (such as : ISIM) with QMI or AT-Command.  
We have try the issue 1 month, but still can not found solution.

1. For AT command, we can read Linear fixed struct data, but we can’t select to ADF.
2. For QMI qa sample code

> doSLQSUIMGetFileAttributes =\> it can’t read any sim card information.  
> doSLQSUIMReadTransparent =\> it only can read Transparent struct and can’t switch to ISIM(ADF).

Does anybody can provide some information on the issue?  
I want switch to ISIM and read linear fixed data by QMI or AT-command.

Many thanks