> SIM cards have hundreds of various configuration knobs influencing what a (compliant) baseband does, so I wouldn’t be surprised if there was one that does jus

> SIM cards have hundreds of various configuration knobs influencing what a (compliant) baseband does, so I wouldn’t be surprised if there was one that does just that. There is EF-UST (USIM Service Table) but it doesn't explicitly allow/deny radio access technologies.