What Is an eSIM QR Code and How Does It Work?
An eSIM QR code is a scannable image that contains an SM-DP+ server address and a unique activation code, which your phone uses to download and install your eSIM profile. It's not your phone number or personal data — it's just an installation key, and it's typically single-use.
What Is Actually Encoded in an eSIM QR Code?
An eSIM QR code encodes two pieces of information under the GSMA's remote SIM provisioning standard: an SM-DP+ (Subscription Manager Data Preparation) server address, and a unique activation code tied to your specific plan. When you scan it, your phone contacts that server, verifies the activation code, and downloads your eSIM profile — the digital equivalent of the data stored on a physical SIM card.
How Do You Scan an eSIM QR Code?
- Open your phone's camera or the provider's app — on iPhone, Settings → Cellular → Add eSIM also has a built-in scanner
- Point it at the QR code from the provider's email or app, ideally on a second device or printed, not a screenshot on the same phone
- Confirm the install prompt that appears once your phone recognizes the code
- Label the new line (e.g. "Travel") so it's easy to tell apart from your home SIM
- Turn on data roaming for the new line specifically before you rely on it
Can You Scan an eSIM QR Code on the Same Phone?
Not directly from a screenshot in most cases — you generally need a second screen (another phone, a tablet, or a printed copy) to scan the code into the phone that will use it. If you bought the plan through the provider's own app on that same device, though, most providers offer a one-tap in-app install that skips scanning entirely.
Is an eSIM QR Code Reusable?
Usually not. Most eSIM QR codes are single-use and are invalidated by the SM-DP+ server as soon as the profile is installed on a device. That's why you can't forward the same code to a friend, and why reinstalling an eSIM on a new phone after a factory reset often means buying a fresh plan rather than rescanning the old code — though a few providers allow a limited number of reinstalls if you contact support first.
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For the full setup walkthrough beyond just the QR code step, see how eSIM works.
Frequently asked questions
Can I reuse an eSIM QR code after scanning it once?
Usually not. Most eSIM QR codes are single-use and become invalid once the profile has been installed on a device, which is why you can't simply forward the same code to a friend or reinstall it on a new phone.
What do I do if my eSIM QR code won't scan?
Try scanning it directly from the email or provider app rather than a screenshot, since compression can blur the code. If it still won't scan, most providers let you enter the SM-DP+ address and activation code manually instead.
Is it safe to screenshot my eSIM QR code?
Treat it like a password. Anyone who scans your unused eSIM QR code could install your data plan on their own device, so avoid posting it publicly or sharing it before you've activated it yourself.
Can I install an eSIM without scanning a QR code?
Yes. Most providers also support manual entry of the SM-DP+ address and activation code, or a one-tap in-app installation if you bought the plan directly through their app on the same device.
Does the eSIM QR code contain my phone number?
No. It contains an SM-DP+ server address and an activation code that tells your phone where to download the eSIM profile from — not a phone number or personal data.