I should add that if is not mandated, then it is illegal to do under GDPR and other privacy laws beyond what is necessary without obtaining explicit consent. Ev

I should add that if is not mandated, then it is illegal to do under GDPR and other privacy laws beyond what is necessary without obtaining explicit consent. Even if it was mandated, the telcos still could not do with the data as they please and forward it to another company like AT&T did.