Does my SIM card have a serial number? Is it the same as IMEI?

Yes, your SIM card has a serial number and it is different from your IMEI. You can normally find your SIM serial number (SSN) on the side of the card. The SSN typically has 19 digits and contains specific details about your operator, your location, and when it was made. The SSN is sometimes called the ICC-ID (Integrated Circuit Card ID).