[cortesoft]

I think the 4th Amendment is about the general concept of privacy, and it is definitely the law.

[pjc50]

No, not at all; it only refers to search and seizure carried out by the government. Whereas the 1st amendment is usually interpreted to mean that, once you've given data to a third party, they are free to publish it. In this situation the phone location data belongs to the phone company.

ECHR Article 8 contains a genuine right to privacy.

[azernik]

It's about protection from government intrusion. Negative rights, rather than a positive right as in Europe.