Where to find your SIM card number in Settings

Your SIM card number (also called the ICCID or Integrated Circuit Card Identifier) is stored in your iPhone's settings and takes about 30 seconds to locate. Open Settings, tap General, then About. Scroll down until you see "ICCID" — that 19 or 20-digit number is your SIM card number. Write it down or take a screenshot if you need it for your carrier or a support call.

This method works on any iPhone model running iOS 12 or newer. The number stays the same as long as you keep the same physical SIM card in your phone. If you switch to a new SIM card (even from the same carrier), the ICCID changes.

If you don't see an ICCID listed in About, your iPhone may be using an eSIM instead of a physical SIM card. eSIMs are digital and don't have a traditional SIM card number in the same way, though your carrier can still identify your line by other means.

Key Takeaways

  • Your SIM card number appears in Settings > General > About under the label "ICCID" and is a 19 or 20-digit code.
  • This method works on all recent iPhone models and takes less than a minute to complete.
  • The ICCID changes only when you physically replace your SIM card with a different one.
  • If you see no ICCID in About, your phone uses an eSIM, and your carrier can identify your account through other information.

Why you might need your SIM card number

Your carrier may ask for your ICCID when you call support about billing, account changes, or phone replacement. Some carriers also need it if you're switching devices and want to move your existing SIM to a new phone. If you're troubleshooting connectivity issues, having the number ready speeds up the conversation with technical support.

You might also need it if you're setting up a new phone and want to confirm which SIM is active, especially if you have multiple lines or are testing a new carrier's SIM before fully switching over.

The difference between SIM card number and phone number

Your SIM card number (ICCID) and your phone number are two different things. Your phone number is what people call or text — it's tied to your carrier account. Your SIM card number is a unique identifier for the physical card itself. You can keep the same phone number but get a new SIM card (with a new ICCID) if yours is damaged or lost.

Think of it this way: your phone number is like your mailing address, and your SIM card number is like your mailbox's serial number. The address matters to people sending you mail; the serial number matters to the company that installed the mailbox.

Finding your phone number on iPhone

If you need your actual phone number instead, go to Settings > Phone. Your number appears at the top under "My Number." If nothing shows there, your carrier hasn't provisioned the number yet, or you're using an eSIM that hasn't been fully activated.

You can also find your phone number by opening the Phone app and tapping Contacts, then scrolling to the very top where "My Card" or "Me" usually appears with your number listed.

What to do if ICCID doesn't appear

If you go to Settings > General > About and don't see an ICCID field at all, your iPhone is using an eSIM. eSIMs are digital SIM profiles stored on your phone's chip rather than on a removable card. You won't find a traditional SIM card number because there is no physical card to identify.

If your carrier needs to identify your eSIM, they'll use your phone number or account number instead. You can see which eSIMs are active by going to Settings > Cellular and looking at your active plans. If you need to switch carriers or troubleshoot an eSIM, your carrier can walk you through it using your account details rather than an ICCID.

Physical SIM versus eSIM on iPhone

Most newer iPhones support both physical SIM cards and eSIM. A physical SIM is the small card you insert into a tray on the side of your phone — it has an ICCID printed on it and in your settings. An eSIM is a digital profile that lives on your phone's hardware and doesn't have a removable card.

If you have a physical SIM, you'll see the ICCID in Settings. If you have an eSIM, you won't. Some iPhones let you use both at the same time (one physical SIM and one eSIM), which is useful if you want two phone numbers or carriers active on the same device. Check Settings > Cellular to see which type you're using.

Frequently Asked Questions

Is my SIM card number the same as my IMEI?

No. Your IMEI is your phone's unique identifier; your ICCID is your SIM card's identifier. You can find your IMEI in the same Settings > General > About menu — it's a separate 15-digit number. If you replace your SIM card, the ICCID changes but the IMEI stays the same because it's tied to the phone hardware, not the card.

Can I find my SIM card number without opening Settings?

If you have a physical SIM card, you can remove it from the tray and read the number printed on the card itself. The ICCID is usually printed on the back in small text. However, the Settings method is faster and works for both physical SIM and eSIM.

What if my iPhone shows two ICCIDs?

Your iPhone has both a physical SIM and an eSIM active. Settings will list both numbers. The first one is usually your primary line. You can manage which one is active for calls, texts, and data in Settings > Cellular by tapping each line and adjusting the settings.

Do I need my SIM card number to switch carriers?

Not always. Your new carrier will usually ask for your phone number and account details. However, some carriers may request the ICCID during the transfer process, so having it ready doesn't hurt. If you're moving to an eSIM with a new carrier, they won't need an ICCID at all.