How to Change Your SIM Card in an iPhone

You can change your iPhone's SIM card in about two minutes using the ejector tool that came in the box

Your iPhone stores your phone number and carrier information on a small chip called a SIM card. If you're switching carriers, replacing a damaged card, or moving to a new phone, you'll need to remove the old SIM and insert a new one. The process is the same on every iPhone model — you locate the SIM tray on the side of the phone, use a small metal tool to pop it out, swap the cards, and push the tray back in.

The entire process takes about two minutes and requires no technical knowledge. The hardest part is usually finding the ejector tool, which is a thin metal pin that Apple includes with every new iPhone. If you've lost it, a straightened paperclip or a small safety pin works just as well.

Key Takeaways

The SIM card tray is located on the side of your iPhone, and you open it by inserting the ejector tool into the small hole next to the tray.
Your new SIM card must be the correct size for your iPhone model — most modern iPhones use nano-SIM cards, but check your carrier's documentation first.
The SIM card only fits one direction; if it doesn't slide in smoothly, flip it over rather than forcing it.
After inserting the new SIM, your iPhone will take a few minutes to recognize the carrier and connect to the network.

Locate the SIM card tray on your iPhone

The SIM tray is a small rectangular slot on the side of your iPhone. On most models, it's on the right side of the phone. On iPhone 6s and earlier models, it's on the right side as well, but the exact position varies slightly. Look for a tiny hole next to a thin line that outlines the tray — this is where you'll insert the ejector tool.

If you're having trouble finding it, hold your iPhone up to the light and look at all four sides. The tray will be visible as a small rectangular outline with a hole next to it. Don't confuse it with the volume buttons or the power button, which are larger and more rounded.

Insert the ejector tool and remove the tray

Take the ejector tool (the small metal pin that came with your iPhone) and insert it straight into the hole next to the SIM tray. Push gently but firmly — you should feel a slight click as the tray pops out slightly. Do not push hard or at an angle, as this can damage the tray or the phone.

Once you feel the click, remove the tool and use your finger to pull the tray the rest of the way out. The tray will slide out smoothly if you've pushed it correctly. If it doesn't pop out, try again with slightly more pressure. If you've lost the ejector tool, a straightened paperclip or a small safety pin will work — just make sure the tip is thin enough to fit in the hole.

Remove the old SIM card and insert the new one

The SIM card sits in a small slot in the tray. Gently lift it out with your fingernail or the edge of the ejector tool. Be careful not to bend or scratch the card, as this can make it unusable. Set the old card aside in a safe place — you may need it later if you switch back to your old carrier.

Take your new SIM card and check that it's the correct size. Most modern iPhones use nano-SIM cards, which are the smallest size. If your carrier sent you a different size, you may need to contact them for a replacement. Slide the new card into the tray with the gold contacts facing down. The card should fit snugly and lie flat in the tray. If it doesn't slide in smoothly, flip it over — the card only fits one direction.

Push the tray back into your iPhone

Once the new SIM card is seated in the tray, align the tray with the slot on the side of your phone and push it in gently but firmly. You should hear or feel a small click as the tray locks into place. Push straight in — do not push at an angle, as this can misalign the tray and damage the phone.

After the tray is fully inserted, wait a few minutes for your iPhone to recognize the new SIM card and connect to the carrier's network. You may see a message asking you to update your carrier settings — if so, tap Update to proceed. Your phone will then search for the network and display the carrier name at the top of the screen once it connects.

Troubleshoot if your iPhone doesn't recognize the new SIM

If your iPhone shows "No Service" or "SIM Not Recognized" after a few minutes, the card may not be seated correctly. Power off your phone, remove the tray again, and check that the SIM card is lying flat and the gold contacts are facing down. Reinsert the card and push the tray back in, then power your phone back on and wait another few minutes.

If the problem continues, the SIM card itself may be damaged or defective. Contact your carrier and ask them to send you a replacement card. In the meantime, you can still use your iPhone on Wi-Fi to make calls and send messages through apps like iMessage or WhatsApp. If you're switching from a different carrier and the old SIM card worked fine, the issue is almost certainly with the new card rather than your phone.

What to do if you lose your SIM card or tray

If you've lost your SIM card, contact your carrier and request a replacement. Most carriers can mail you a new card within a few business days, or you can visit a store to get one immediately. There is usually no charge for a replacement SIM card, though some carriers may charge a small fee.

If you've lost the SIM tray itself, you have two options: order a replacement tray from Apple (search for "iPhone SIM tray" on Apple's website and select your model), or visit an Apple Store or carrier store to have one installed. A replacement tray costs between $5 and $10 and takes about 10 minutes to install. In the meantime, you cannot use your phone on a cellular network, but Wi-Fi calling may be available depending on your carrier.

Frequently Asked Questions

Do I need to turn off my iPhone before changing the SIM card?

No, you can change the SIM card while your iPhone is on. However, turning it off first is a safe practice and ensures the phone doesn't try to connect to the network while you're swapping cards. If you leave it on, simply wait a few minutes after reinserting the tray for the phone to recognize the new card.

What if my new SIM card is a different size than the old one?

Modern iPhones use nano-SIM cards, which are the smallest size available. If your carrier sent you a micro-SIM or standard SIM, contact them and request a nano-SIM instead. Do not try to cut or modify a larger SIM card to fit, as this will damage it and make it unusable.

Will changing my SIM card erase my photos or data?

No, changing the SIM card does not affect any data on your iPhone. Your photos, messages, apps, and settings will remain exactly as they are. The SIM card only stores your phone number and carrier information, not your personal data.

How long does it take for my iPhone to recognize a new SIM card?

Most iPhones recognize a new SIM card within a few minutes of reinserting the tray. If your carrier requires a settings update, you may see a prompt to update carrier settings — this process takes another minute or two. If your phone still shows "No Service" after 10 minutes, remove and reseat the tray to ensure it's properly inserted.

Can I use my old SIM card in a different iPhone?

Yes, as long as the old SIM card is the correct size for the new iPhone. If you're moving from an older iPhone to a newer model, check whether both phones use nano-SIM cards. If the old phone used a larger SIM, contact your carrier for a nano-SIM before switching phones.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.