Happy Father’s Day, Dad! Here’s a “Free” 4G Phone.

Call it spring cleaning: T-Mobile is giving free 4G smartphones to dads for Father’s Day, including Samsung’s Galaxy S II, the Nokia Lumia 710, the HTC One S and the BlackBerry Bold 900, provided that qualifying customers (proof of fatherhood required?) sign up for one of T-Mobile’s classic or unlimited two-year wireless plans. The phones will work on T-Mobile’s “4G” wireless network, which is actually an HSPA+ wireless network available in 229 markets across the U.S.