Wall Street Journal

The smartphones at the center of consumers’ lives generate vast streams of data on where they live, work and travel, and how wireless carriers use that personal data and share it with other companies has come under increased scrutiny. The four major U.S.

Cellphone carriers usually ask for their customers’ blessing before listing their phone numbers, sharing their addresses or exposing them to promotional emails. But seeking permission to share one particularly sensitive piece of information—a cellphone’s current location—often falls to one of several dozen third-party companies like Securus Inc. and 3Cinteractive Corp. Carriers rely on those firms to vouch that they obtained users’ consent before handing over the data.

ZTE Corp can resume business with its US suppliers, the Commerce Department said July 13, after the Chinese telecommunications giant met the conditions of a deal President Donald Trump made to save the company. The saga over the fate of the Chinese firm began in April when Commerce banned US companies from selling to ZTE as punishment for its failure to honor an earlier US agreement to resolve its sanctions-busting sales to North Korea and Iran. Because ZTE relies on US suppliers to make its smartphones and to build telecommunications networks, the penalty was effectively a death knell.