Promoting Internet Freedom and Innovation Act of 2019 This bill establishes transparency requirements for a provider of broadband internet service and prohibits a provider from taking certain actions to restrict content. Specifically, the bill requires a broadband internet provider to disclose accurate management practices, performance information, and commercial terms sufficient for consumers to make informed choices and for entrepreneurs and small businesses to develop, market, and maintain new internet offerings. Additionally a provider is barred from (1) blocking lawful content, applications, or services; (2) prohibiting the use of non-harmful devices; (3) throttling lawful internet traffic; or (4) engaging in paid prioritization.