Quick checklist:

• Confirm the new phone accepts a physical SIM or uses an eSIM.
• Make sure your old phone is powered off before removing the SIM.
• Use a SIM ejector or small tool to remove the tray, then place the SIM into the correct slot on the new phone.

Extra tips: If the new device uses an eSIM, you may need to activate a digital profile instead of inserting a physical card. Also check that the phone is unlocked and compatible with your plan. Walmart offers starter SIM kits and in-store help if you want assistance with activation.

A physical SIM is a small plastic card with a metal contact that you insert into a device, while an eSIM is built into the device as a programmable chip. Here’s how they differ:

• Physical SIM: Removable, comes in different sizes (standard, micro, nano), easy to swap between devices.
• eSIM: Embedded and holds one or more operator profiles that can be downloaded or switched without swapping cards.

Check your device specs to see which it supports. You can buy physical SIM kits or eSIM activation codes through Walmart, depending on what your device needs.

Try these steps to troubleshoot a SIM not detected message:

1. Turn the phone off, remove and reseat the SIM card, then restart the device.
2. Inspect the SIM for damage or dirt; gently wipe contacts with a soft, dry cloth.
3. Try the SIM in another compatible device to narrow down whether the SIM or phone is the problem.
4. Ensure your device software is up to date and that the phone is unlocked for the SIM.

If problems persist, consider replacing the SIM or visiting a store for hands-on help with activation or a replacement SIM kit.

When traveling, you have a few practical SIM options:

• Buy a local SIM at your destination for better local rates and coverage—your phone must be unlocked.
• Choose a global or travel SIM that offers data across multiple countries if you’ll visit several places.
• Consider a data-only SIM for mobile hotspots or tablets.

Before you go, confirm your device supports the networks at your destination and check activation requirements. Walmart carries travel and data-only SIM options and can help with purchasing and activation guidance before you leave.

Most modern devices use nano SIMs, but some older models use micro or standard sizes. Here’s how to find the right one:

• Check the device manual or online specifications for the SIM type.
• Look at your current SIM—many kits are triple-cut to fit all sizes.
• If you only have a smaller SIM and need a larger one, adapters can help; avoid forcing a trimmed SIM into the tray.

Walmart offers 3‑in‑1 SIM kits and starter packs that accommodate multiple sizes and can simplify getting the right fit for your device.