Types of SIM Cards

Architectures

M2M eSIM

• Not commonly used

Consumer eSIM

• QR Code (Typically)
• Can be encoded by other means

IoT eSIM

• Successor to M2M
• Allows remote provisioning

eSIM with Quectel modems

Precautions

Modem will kick down the SIM card once profiles are swapped. Ensure SIM Recovery is activated:

AT+QCFG="siminvalirecovery",1,5,255
AT+CFUN=1,1

Use lpac

export LPAC_APU=at
export AT_DEVICE=/dev/ttyUSB3

Links

• Specifications: https://www.gsma.com/esim/esim-specification/
• eSIM Camp 2023: https://media.ccc.de/v/camp2023-57190-demystifying_esim_technology