Sarah Krouse

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.

The New York attorney general’s office is investigating how T-Mobile’s  $26 billion deal to buy Sprint could impact competition in the pay-as-you-go wireless market, according to people familiar with the matter. Representatives from the state attorney general’s office have contacted companies that sell prepaid phone services in recent weeks with questions about pricing and customers. Dozens of other state attorneys general are part of the probe. Prepaid subscribers don’t sign long-term contracts and instead pay up front each month.