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We’ll occasionally send you account related emails. Sign in to your account We need to be able to access the SIM card filesystem in order to work some magic while collecting relevant and necessary network data, not available from AOS API.There may be many ways to read the file system on a SIM card. Sign up for a free Git Hub account to open an issue and contact its maintainers and the community.By clicking “Sign up for Git Hub”, you agree to our terms of service and privacy statement.So I looked into CRSM command to see how it works and what it can do. Demo: AT CRSM=176,28542,0,0,11 * read EF-LOCI CRSM: 144,0,18055A1B05F5101030FF00 * decode at GSM 11.11, 10.3.17 * 18055A1B TMSI * 05F5101030 LAI: 50501 4144 * FF current T3212 value (used on phase 1 devices only) * 00 location update status 176 is for READ Binary, 28542 is decimal representation of EF fileid 0x6F7E.We use this command already to obtain the ciphering indicator. Other parameters should specify the record number and length of response.
You can only install an applet if you have a developer SIM where you know the key or if you have somehow the luck to get a SIM where you don't need the key.This should read Kc from file 0x6F20, doesn't work on my SIM By using this command instead of Generic SIM Access CSIM TE application has easier but more limited access to the SIM database.Set command transmits to the ME the SIM and its required parameters.It’s not returned after a successful UPDATE BINARY or UPDATE RECORD command. However commands READ BINARY and READ RECORD can be issued before PIN authentication and if the SIM is blocked (after three failed PIN authentication attempts) to access the contents of the Elementary Files.Note: use only decimal numbers for parameters Most RIL (radio interface layer) implementation for Android is relying on the CRSM (restricted SIM access) AT command for providing SIM IO service.