Hello everyone, We are encountering difficulties with registering and provisioning an eSIM from an MNO of our choice using the MC7421 module. Is it possible to use our own eSIM with the MC7421, or is this functionality not supported by this module? If the MC7421 does not support it, are there any …

maybe it depends on the SKU number do you check with the distributor or sales team?

The consumer eSIM only for EM76xx, EM91xx, and EM92xx with SKU depends. The EM7411, based on a 9x50 chipset, was designed before eUICC SGP.22 standards were popular. Might have SKU but with Semtech connectivity. Anyway, please contact your local distributor to get the relevant SKU, etc.

If there is not an internal physical eUICC chip in the modem, is it possible to put/write the provisioning profile on a read/write able SIM card somehow?

You need to check with your network operator how to set the profile in the physical sim card But i am not sure if they will allow you to set this

Do you know if something like https://esim.me/ would work with older Sierra devices? Or is it possible to do something similar using Sierra Sim Tool Kit?

Is your link for esim instead of physical sim card?

esim.me is supposed to be a physical sim card giving eSIM functionality to e device originally without it. But is it possible to put ISP profile in the card using Sierra device and SW?

Have you checked with network operator on how to do this? For example, can you change the profile by at+csim command ？

Sure, but first I have to have the profile on the sim card. The question still stands is there any Sierra means for doing it. Putting the profile on a blanck eSIM card.

you can try AT+CSIM command I remember this command can activate the profile in eSIM [image] Insert/Download eUICC profile within eSIM using "AT+CSIM=" command IoT Modules Hi ! I’m new to eSIM and for a personal project, I want to reproduce the behaviour of …

eSIM Provisioning on MC7421

IoT Modules MC/EM Series

jyijyi April 9, 2026, 4:39am 28

you can try AT+CSIM command
I remember this command can activate the profile in eSIM

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eSIM Provisioning on MC7421

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