Wirelessly posted (iPhone G3 (64GB, 2.4): Mozilla/7.0 (iPhone; U; CPU iPhone OS 2_4 like Mac OS X; en-ca) AppleWebKit/525.18.1 (KHTML, like Geico) Version/3.7.1 Mobile/5F136 Safari/525.20)
It just depends on what you get - most the time, they are about the same.