Sprint will pay $7.5 million to resolve a Federal Communications Commission investigation over whether the carrier failed to respect consumer requests to opt out of phone and text marketing from the carrier. The FCC said in a statement that it is the largest-ever settlement over potential Do Not Call violations. It follows an earlier 2011 settlement that the carrier had made with regulators, in which it paid $400,000. “We expect companies to respect the privacy of consumers who have opted out of marketing calls,” said Travis LeBlanc, acting chief of the Enforcement Bureau. “When a consumer tells a company to stop calling or texting with promotional pitches, that request must be honored.” Sprint signed a consent decree with the FCC, agreeing to make the payment and develop new procedures and policies to comply with do-not-call rules.