is a string of numbers that essentially serves as the SIM card's serial number. It's unique and inherent to every SIM card, so even if you change your phone but use the same SIM, the ICCID number ...

That SIM card and it's unique serial number (the ICCID, or integrated circuit card ID) is registered with a cellular network, then tied to a phone number. So the SIM card in your phone has an ...

Verify the ICCID and IMEI numbers. The ICCID is a serial number (up to 22 numbers) that identifies a SIM card. The number is ...

A physical SIM card is essentially a tiny card with a chip that connects your phone to your wireless carrier. It contains ...

This consists primarily of the Integrated Circuit Card Identifier (ICCID), which is the SIM’s own serial number, and the subscriber’s account number, officially known as the International ...

You can check to see if your iPhone is unlocked in Settings or by checking the IMEI and serial number online. You can also test your phone by swapping SIM cards with another phone that has a plan ...

In this way the customer ID (and personal number) is tied to the SIM card and not to a certain mobile phone. This allows for a seamless interchange of the same SIM card between different GSM ...