Openline works on the Samsung Galaxy S25 Ultra with a straightforward setup.

Step-by-step install on Samsung Galaxy S25 Ultra

  1. Connect to Wi-Fi.
  2. Open Settings → Connections → SIM manager.
  3. Tap Add eSIM.
  4. Choose Scan QR code from service provider and scan the code from your Openline confirmation email.
  5. If manual: paste the SM-DP+ Address and Activation Code from the same email.
  6. Confirm and name the plan Openline.
  7. Enable Data roaming on the Openline line.
  8. Set Mobile data to Openline.

Notes for Samsung Galaxy S25 Ultra

  • Samsung's Dual SIM management on One UI 6.1+ handles Openline plus a physical SIM or another eSIM without issue.
  • Wi-Fi calling on the home line is preserved.
  • Some regional Samsung variants sold in certain Asian markets have eSIM disabled — this doesn't apply to standard international Samsung Galaxy S25 Ultra units.

Still stuck?

Reach Openline support 24/7 through any of these channels:

When you write in, include your purchase code (the OL-… code we emailed you) and, if the eSIM is already installed, its ICCID (Settings → Cellular → tap the Openline line). That's enough for us to find your plan and diagnose without back-and-forth.