The FCC has imposed nearly $200 million in fines on AT&T, Verizon, Sprint, and T-Mobile US for illegally selling subscribers' location data.

Concerns about the unauthorized sale of customer location data by major telecoms were first raised in 2018.

Senator Ron Wyden praised the FCC's enforcement, emphasizing that customers did not consent to the selling of their location information.

The FCC's investigation revealed the telcos sold data to third parties without proper customer consent and failed to ensure downstream buyers obtained this consent.

The implicated telecom companies are contesting the fines, claiming they have ceased the questioned practices and addressed the issues.