FCC Probing US Phones That Use Signals From Foreign Satellites

The Federal Communications Commission is investigating whether mobile devices in the US that receive and process signals from satellites controlled by foreign adversaries are violating federal rules.

It’s not clear whether the practice poses a security threat, the FCC said in an emailed statement Thursday, disclosing the investigation that it described as “ongoing.” The agency is looking into device makers including Apple Inc., Alphabet Inc.’s Google, Samsung Electronics Co. and Nokia Oyj in a probe that began several months ago, an agency official said on Thursday.

Mobile phones compare signals from satellites in order to determine the device’s ...