Turkey's Tier-1s have effectively shut down 3G. Your device must support VoLTE on Turkish frequency bands (Band 3, 20, 1, 8, 7) for voice apps to work reliably over Openline data. Most 2020+ phones do.

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.