Gsm security - we're at the mercy of the firmware

[Matthias Weiler]

I just checked the archives and noticed I didn't send my answer to the
list. So here it is.

Thanks a lot for your answer. I did find some more information in the
meantime.

> As far as I am aware, UMTS and HSPA are separate from GSM/GPRS/EDGE, 
> but I don't think the current radio firmware supports those modes of 
> operation.

There is an option in the Testing-menu.
Type *#*#4636#*#* in the Dialer.
In "Phone Info" you can set your preferred network type to WCDMA only.

I couldn't test if if really doesn't connect if there is no 3G
available. The tool still says "GSM service: In service" so I can't tell
if this would protect in any way.


About IMSI-Catcher-Catcher there is a post on xda[1] with further links.
That's something that might be achived on a higher level.


[1] http://forum.xda-developers.com/showthread.php?t=1422969