Hong Kong Telecommunications is turning to the legal system in a complaint with the city's telecoms regulator over Apple iPhone locking, according to the Wall Street Journal. Unlocked phones are commonplace in Hong Kong; in fact, the city was one of the first regions in the world to get unlocked iPhones as an option. The iPhone 5, though, is only compatible with two 4G networks in the area, excluding HKT -- which is owned by Hong Kong's biggest telecoms company, PCCW.