Openline works fully on the iPhone 16 Pro Max.

Step-by-step install on iPhone 16 Pro Max

  1. On the iPhone 16 Pro Max, connect to Wi-Fi.
  2. Open the Openline confirmation email on a second screen (or on the iPhone 16 Pro Max itself for one-tap install on iOS 17.4+).
  3. Tap the Install eSIM button, or open Settings → Cellular → Add Cellular Plan → scan the QR from the email.
  4. Follow the iOS prompts. Label the new line Openline.
  5. Once installed:
  • Cellular Data → Openline
  • Default Voice Line → keep your home line
  • Data Roaming (on the Openline line) → ON
  1. Land at your destination, turn airplane mode off, wait 30–60 seconds — you're online.

Notes for iPhone 16 Pro Max

  • The iPhone 16 Pro Max supports 5G on Openline where the partner network deploys it.
  • Dual-eSIM is supported — your home eSIM (if you use one) can stay installed alongside Openline.
  • Wi-Fi calling on the home line continues to work when Openline is active.

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.