The feature, rolled out in recent days, appears to flag which accounts are connecting from inside Iran, sparking online claims that some prominent users are posting via so-called “white SIM cards” – privileged, unrestricted mobile lines…

The feature, rolled out in recent days, appears to flag which accounts are connecting from inside Iran, sparking online claims that some prominent users are posting via so-called “white SIM cards” – privileged, unrestricted mobile lines…