Everything You Need to Know About eSIM on iPhone and Apple Watch

Everything You Need to Know About eSIM on iPhone and Apple Watch

Staying connected has never been easier thanks to eSIM on the iPhone and Apple Watch. Whether you’re traveling, managing multiple numbers, or just want a cleaner setup without physical SIM cards, eSIM gives you the flexibility you need. We’ll walk you through which models are compatible and the benefits of using eSIM over a traditional SIM.

What Is an eSIM?

An eSIM is a digital version of a SIM card built into your device. It lets you activate a mobile plan instantly no physical card needed. You can add or switch plans by scanning a QR code or transferring from another iPhone. It’s more convenient, secure, and flexible, making it easier to manage multiple lines or use local data plans while traveling.

Which iPhone and Apple Watch Models Are Compatible with eSIM?

Before activating an eSIM, make sure your mobile carrier supports eSIM in your country and check which activation methods it offers such as QR code, app setup, or quick transfer. Also, ensure your device is updated to iOS 17.4 or later for the best experience.

Which iPhone Supports Models support eSIM

The following iPhone models support eSIM:

With Dual SIM, you can easily manage work and personal numbers, or keep a local data plan for travel alongside your main line. You can switch data lines with a single tap and choose which line to use for calls, messages, or specific contacts.

Which Apple Watch Support eSIM

When it comes to the Apple Watch, all “GPS + Cellular” models come with built-in eSIM support. This includes:

How to Activate an eSIM on iPhone

Activating an eSIM on your iPhone is quick and simple the exact steps depend on your carrier. Here are the main methods:

1. Quick Transfer (from another iPhone)

If you’re upgrading to a new iPhone:

Step 1: Turn on your new iPhone and follow the setup steps
Step 2: When you see “Set Up Cellular”, choose Transfer from a nearby iPhone.
Step 3: Confirm the transfer on your old iPhone (enter the code shown if prompted).
Step 4: Wait for activation — your old SIM will be deactivated automatically.

2. Convert a Physical SIM to eSIM

If your carrier supports it, you can switch without visiting a store:

Step 1: Go to Settings > Cellular > Add eSIM (or Set Up Cellular).
Step 2: Tap Convert to eSIM and follow the on-screen instructions.

3. Use a QR Code

Some carriers give you a QR code for eSIM setup:

Step 1: Go to Settings > Cellular > Add eSIM.
Step 2: Tap Use QR Code, scan it, and wait for activation.

4. Carrier Activation or App

If you bought your iPhone from a carrier, your eSIM may install automatically.
You can also use your carrier’s app or activation link if provided.

How to Activate an eSIM on Apple Watch

To use cellular on your Apple Watch (GPS + Cellular), you’ll need an iPhone with an active eSIM plan from a carrier that supports Apple Watch connectivity. Once that’s set, follow these steps:

1. Pair Your Apple Watch with Your iPhone

Step 1: Open the Watch app on your iPhone.
Step 2: Tap Start Pairing and follow the on-screen steps to connect your Apple Watch.

2. Set Up Cellular Service

Step 1: In the Watch app, go to My Watch > Cellular.
Step 2: Tap Set Up Cellular.
Step 3: Follow the instructions from your mobile carrier — you might need to sign in or confirm your plan.

3. Wait for Activation

Once activated, a green cellular icon will appear in the Control Center on your Apple Watch when connected to a network — even if your iPhone isn’t nearby.

Note: Only one mobile plan can be active on Apple Watch at a time. If your iPhone has Dual SIM, you’ll need to choose which line your watch will use for data and calls.

eSIM for Travel: International Plans and Tips

When traveling abroad, eSIM makes it easy to stay connected without swapping physical SIM cards. You can purchase and activate a local or international data plan before you even arrive at your destination. Simply set your travel eSIM as your data line, while keeping your main number active for calls, messages, and apps.

Once you’re back home, you can deactivate or remove the temporary plan anytime under Settings > Mobile Data.

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