Samsung is charged by the Australian Consumer Protection Officer for allegedly misleading claims about the water resistance of its phones.
The Australian Competition and Consumer Commission (ACCC) claims that Samsung's ads made "false" claims about using its phones while swimming and surfing.
The ACCC claimed to have reviewed more than 300 Samsung ads before initiating its legal action.
Samsung told Reuters he was going to defend the case and stuck to his ads.
In its statement, the ACCC, Samsung pointed out that phones are exposed to seawater and swimming pools, and claimed that this would not affect the device during its lifetime This rating does not apply to salt water or swimming pools ,
Samsung's own website advises people not to use the Galaxy S1
Samsung has not carried out enough tests to place its advertised claims about the longevity of its ACCC products.
"Samsung showed the Galaxy phones in situations where they should not be to attract customers," said the ACCC.
If Samsung is found guilty of misleading consumers, it faces a hefty fine.