Published every weekday, the Switchboard highlights five tech policy stories you need to read.

Google weighs a plunge into mobile phone services. "After thrusting itself into competition with U.S. cable operators, Google is inching closer to competing with wireless carriers, too," according to The Information.

T-Mobile offers credits to retain BlackBerry customers. "T-Mobile's CEO John Legere said Thursday he was disappointed with BlackBerry's decision this week to split with the carrier," reports Computerworld, "and offered credits to hold on to dedicated BlackBerry users among its customers."

'Cuban Twitter' heads to hearings in Congress. "The head of the U.S. government agency that secretly created a "Cuban Twitter" communications network designed to undermine the communist government in Cuba is expected to testify next week before a senator who thinks the whole idea was 'dumb, dumb, dumb,'" reports the Associated Press.

Mozilla CEO steps down over gay marriage furor. "Mozilla's embattled chief executive is resigning after a revolt among employees drew attention to political contributions he made in 2008 opposing same-sex marriage," I wrote Thursday.

Microsoft open sources a big chunk of .NET. "Microsoft announced that it was open sourcing a wide array of its .NET libraries and related technologies and creating a group, the .NET Foundation, to oversee the development and stewardship of the open source components," Ars Technica reports.