The basic process: remove the tray, swap the card, reinsert

To change a SIM card in an iPhone, you eject the SIM tray using a small metal tool, remove the old card, insert the new one, and push the tray back in. The whole process takes about two minutes. iPhones do not have a removable back panel or battery — the SIM tray is the only user-accessible part.

Every iPhone model from the iPhone 6S onward uses the same method. Older models (iPhone 5S and earlier) have a slightly different tray design, but the principle is identical. If you have an iPhone 12 or newer, you may also have an eSIM option, which is a digital SIM that does not require a physical card.

Key Takeaways

  • You need the SIM eject tool that came with your iPhone, or a straightened paperclip or safety pin will work as a substitute.
  • The SIM tray is located on the side of the phone — the right side on most models, the left side on some older iPhones.
  • Push the eject tool straight into the small hole next to the tray until the tray pops out; do not twist or explore sideways pressure.
  • The SIM card sits in a small slot inside the tray with a notched corner that prevents it from being inserted backward.
  • After inserting the new card and reinserting the tray, your iPhone will search for the carrier network and may take a few minutes to connect.

Locating the SIM tray on your iPhone

The SIM tray location depends on your iPhone model. On iPhone 6S through iPhone 11, the tray is on the right side of the phone, about halfway down. On iPhone 12 and newer, it is also on the right side but positioned slightly lower. On iPhone 5S and earlier, the tray is on the top edge of the phone.

Look for a small rectangular outline with a pinhole next to it. The outline marks the tray itself; the pinhole is where you insert the eject tool. If you cannot see it clearly, hold the phone up to a light source and look along the edges. The tray is always metal and slightly recessed into the phone's frame.

Getting the right tool and ejecting the tray

Apple includes a SIM eject tool in the box with every new iPhone. It is a small metal pin, usually silver or gold, about the size of a sewing needle. If you have lost it, a straightened paperclip, a safety pin, or a thin sewing needle works just as well. Do not use anything thicker than a paperclip or anything with a sharp point that could bend — you are not trying to puncture anything, just push a spring-loaded mechanism.

Hold the iPhone steady in one hand. With your other hand, insert the eject tool straight into the pinhole next to the SIM tray. Push gently but firmly until you feel a slight click and the tray begins to slide out. Do not twist the tool or explore sideways pressure — straight in is the only direction that works. The tray will slide out about a quarter inch on its own once the spring releases.

Grasp the tray edge with your fingernail or tweezers and pull it the rest of the way out. The tray is small and straightforward to lose, so do this over a table or other surface where you can see it clearly.

Removing the old SIM card and inserting the new one

The SIM card sits in a small rectangular slot in the tray. It is held in place by friction, not by a latch or clip. Gently push the card toward the back of the tray and it will slide out. If it does not move, try pushing from a different edge — one side will give way more easily than the others.

Before inserting the new card, check that it matches the size your iPhone uses. Most modern iPhones use a nano-SIM, which is the smallest standard size. If your new card is a larger micro-SIM or standard SIM, you will need to have your carrier cut it down or provide a nano-SIM instead. The card will not fit if it is the wrong size, and forcing it can damage both the card and the tray.

Align the new card with the slot in the tray. The card has a notched corner that only fits one way — if the card does not slide in smoothly, flip it and try again. Do not force it. Once the card is seated, it should sit flush with the tray with no part of it sticking up.

Reinserting the tray and waiting for connection

Slide the tray back into the phone in the same direction it came out. Push gently until you hear or feel a click — the tray should sit flush with the phone's edge with no gap. If the tray is difficult to reinsert, remove it and check that the SIM card is seated properly in the tray slot. A card that is not fully inserted will prevent the tray from closing.

Once the tray is in, your iPhone will begin searching for the carrier network. This usually takes 30 seconds to two minutes. You may see "Searching" or "No Service" briefly, then the carrier name will appear at the top of the screen. If the phone does not connect after five minutes, restart it by holding the power button until the shutdown slider appears, then slide to power off and back on.

What to do if the card is not recognized

If your iPhone shows "No SIM" or "Invalid SIM" after reinsertion, the card may not be making full contact with the tray. Remove the tray again and check that the card is pushed all the way into the slot — it should not move when you gently push on it. Reinsert the tray and wait another minute.

If the message persists, the SIM card itself may be damaged or inactive. Contact your carrier to confirm the card is active and has not been deactivated. Some carriers require you to set up a new SIM before it will work, either through their website or by calling customer service. If you are switching carriers, the old carrier's SIM will not work in your phone — you must use the new carrier's card.

Using an eSIM instead of a physical SIM card

iPhone 12 and newer models support eSIM, a digital SIM that does not require a physical card. An eSIM is stored in your phone's memory and activated through your carrier's app or website. You can have both a physical SIM and an eSIM active at the same time, which is useful if you travel or use two phone numbers.

To set up an eSIM, go to Settings, then Cellular, then Cellular Plans, and follow your carrier's instructions. Most carriers provide a QR code you scan with your iPhone camera, or a code you enter manually. eSIM setup usually takes a few minutes. If you are switching to eSIM and no longer need the physical SIM, you can leave the tray empty — the phone will function normally with just the eSIM.

Frequently Asked Questions

Can I change my SIM card without turning off my iPhone?

Yes. Turning off the phone is not necessary, though some people prefer to do it to avoid any potential connection issues during the swap. The process is the same either way — eject the tray, swap the card, and reinsert. Your phone will straightforward lose signal for a few seconds while the tray is out.

What happens to my data when I change the SIM card?

Your data stays on the phone. The SIM card only stores your phone number and carrier information, not your photos, messages, contacts, or apps. Changing the SIM does not erase anything. Your contacts and messages will remain exactly as they were.

Why is my new SIM card not working after I insert it?

The most common reasons are that the card is not fully seated in the tray, the card is not active with your carrier, or the card is the wrong size. Check that the card is pushed all the way into the slot and the tray is fully closed. Then contact your carrier to confirm the SIM is active. If you switched carriers, make sure you are using the new carrier's SIM, not the old one.

Do I need to remove my SIM card before selling my iPhone?

Yes. Your SIM card contains your phone number and carrier account information. Remove it before handing the phone to anyone else. You can reuse the SIM in another phone or return it to your carrier. The new owner will need to insert their own SIM to use the phone.

Can I use a SIM card from a different country in my iPhone?

Yes, as long as your iPhone is not locked to a specific carrier. Most iPhones sold in the United States are unlocked and will work with any carrier's SIM. Insert the international SIM the same way you would a domestic one. Your phone may take a few minutes to connect to the new network. Check with your carrier about international roaming rates or local SIM options before you travel.