Integrated Circuit Card Identifier (ICCID)
The ICCID is the unique serial number of a SIM card or eSIM profile, usually 19 or 20 digits long.
What is Integrated Circuit Card Identifier (ICCID)?
It begins with 89 (the telecoms industry code), followed by the country and issuer codes. It identifies the SIM itself, while the IMSI identifies the subscription on the network.