ST4SIM-200M eSIM profile configuration

antoniomtk · ‎2025-01-27

Hi everyone,

In my company, we are currently working on the IOT solution that implements ST4SIM-200M module on our PCB. To shorten things up, we are using SIMCOM modem with the psychical SIM card and it's working ok as we expected.

Our next step was to implement eSIM so we practically replaced the psychical SIM card with the ST4SIM-200M module. Out of the box, after activating default 50Mb profile on Truphone portal, network is started and working ok.

So, the next step for us was to be able to add some more profile to the eSIM module and SIMCOM provided us with some AT commands to manage/manipulate these profiles on the eSIM module. For example, we acquired the local provider QR code with the eSIM profile and activation code for our mobile data plan, but somehow we are not able to do this. Is there an support or some manual/tutorial for the ST4SIM-200M where this profile management procedure is shown or this cannot be done in this way at all.

Sorry, this was my first experience with eSIMs so i apologize if there is something wrong from my side.

Tnx in advance.

Agostino VANORE · ‎2025-01-27

Hi, as you said, the ST4SIM-200 is configured with 1GLOBAL (former Truphone) connectivity, and 1GLOBAL is also configured as Subscription Management platform (SM-SR), able to manage remotely the profile on the eSIM.

According the GSMA SGP.02 specification/architecture, the new profile to be downloaded, shall be available on the SM-DP of the operator and the SM-DP integrated with the SM-SR managing the eSIM.

That said, the profile download shall be managed through SM-SR and in that case referring to 1GLOBAL.

The drawback/limitation of this architecture is that the SM-DP of the operator you want to download is not available on 1GLOBAL SM-SR.

No mechanism is available for local/manual profile management.

Agostino

Andrew Neil · ‎2025-01-27

That's the 2nd time you've had to post this in under a week:

https://community.st.com/t5/interface-and-connectivity-ics/how-to-add-and-switch-between-multiple-esim-profiles-in/m-p/764056/highlight/true#M11575

I think that indicates that this needs to be better documented?

@antoniomtk see also:

https://community.st.com/t5/interface-and-connectivity-ics/how-to-add-and-switch-between-multiple-esim-profiles-in/m-p/764180/highlight/true#M11578

antoniomtk · ‎2025-01-27

Tnx guys on the fast response on the issue. So, to make thing clear for my team briefing , although we have the SIMCOM SIM2860G modem with the all supported AT commands for LPA profile management, that approach is not supported with ST4SIM-200M eSIM module. Only way to manage profiles is through 1GLOBAL partner.

Thanks once again

Andrew Neil · ‎2025-01-28

@antoniomtk wrote:
that approach is not supported with ST4SIM-200M eSIM module.

As @Agostino VANORE said, it's not (just) about the capabilities of the module itself - it's the way the System is defined to work.

Again, see: https://community.st.com/t5/interface-and-connectivity-ics/how-to-add-and-switch-between-multiple-esim-profiles-in/m-p/764180/highlight/true#M11578 - it's about revenue protection!