Only if you're worried about accidental roaming charges. Modern iPhones with "Allow Cellular Data Switching" OFF are safe to leave both lines active. Turning off the home SIM means missing 2FA texts.

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.