What Is an SM-DP+ Address? How eSIM Activation Servers Work
Every eSIM QR code hides an SM-DP+ address inside it — the server that stores your profile before installation. Here's what it does and when you'd type it manually.
Every eSIM QR code has an SM-DP+ address hidden inside it — a technical detail you'll never need to think about unless something goes wrong and you have to install a plan manually. Here's what it actually does.
Key Takeaways
- SM-DP+ stands for Subscription Manager Data Preparation Plus — the remote server that stores your eSIM profile before it's installed on your device.
- The SM-DP+ address is a domain name that tells your device exactly which server to contact to retrieve your specific eSIM profile.
- You only need to type an SM-DP+ address manually if you're installing an eSIM by hand instead of scanning a QR code — most travel eSIM installs never require this.
What is an SM-DP+ address?
SM-DP+ stands for Subscription Manager Data Preparation Plus, and the address is a domain name that uniquely identifies the specific SM-DP+ server your eSIM provider uses. Think of the server as a warehouse holding eSIM profiles ready to be assigned to customers; the address is how your device finds the right warehouse to request yours from.
How does the SM-DP+ address fit into eSIM activation?
When you scan an eSIM QR code, that code already contains the SM-DP+ address along with a unique "matching ID" that identifies your specific eSIM on the server. Your device uses the address to locate and connect to the server, then the matching ID tells the server which exact profile belongs to you. The server validates your device and authorizes the profile — including your data plan and network settings — to install.
When would I need to type the SM-DP+ address manually?
Almost never for a normal travel eSIM install, since scanning the provider's QR code handles both pieces automatically. Manual entry becomes relevant if you're installing an eSIM without a QR code — some providers offer this as an alternative activation method, giving you the SM-DP+ address and matching ID (or activation code) as separate text to type into your device's manual eSIM setup screen instead.
Is the SM-DP+ address the same for every eSIM provider?
No — each eSIM provider (or the underlying eSIM platform they use) typically has its own SM-DP+ server and address, since it's tied to whichever infrastructure issued your specific profile. This is part of why activation codes aren't interchangeable between providers.
Does the SM-DP+ server stay involved after activation?
Its main role is during installation, but it (or the associated network) can also be involved if a provider needs to remotely update or delete an eSIM profile later. Once your profile is installed and active, day-to-day data use goes through the mobile network itself, not the SM-DP+ server.
Frequently asked questions
Is SM-DP+ related to my ICCID?
Related but distinct — the SM-DP+ server is where your eSIM profile lives before installation, while the ICCID identifies the specific installed profile itself. See our IMEI, EID and ICCID guide for how ICCID fits alongside the other eSIM identifiers.
Do I need internet access to use the SM-DP+ address?
Yes — your device needs an active internet connection (Wi-Fi is fine) to reach the SM-DP+ server during installation, since it's a remote server your phone connects to over the internet, not something stored locally.
What happens if the SM-DP+ address is entered incorrectly?
Your device won't be able to locate the server, so the activation will fail with a connection or "couldn't verify" type error — double-checking the address for typos is the first troubleshooting step in a manual install.
Is manual SM-DP+ entry less secure than scanning a QR code?
No — it's the same underlying process either way, just entered as text instead of scanned as an image. The QR code is simply a convenient way to transmit the same address and matching ID without typing them.
Sources
- Airalo, What Is an SM-DP+ Address?, retrieved 2026-07-09, https://www.airalo.com/blog/what-is-an-sm-dp-address
- Telnyx, SM-DP+ Address Explained: Activate Any eSIM Manually, retrieved 2026-07-09, https://telnyx.com/resources/sm-dp-address
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