While two-thirds of Apple's (AAPL -1.22%) revenue now comes from international markets, that doesn't mean the party's over back home. Developed markets like the U.S. do have greater smartphone saturation than emerging markets, but there are still plenty of potential first-time smartphone buyers to go after. Domestically, 30% of mobile phone buyers have yet to buy their first smartphones. At the same time, Apple generates reliable recurring revenue from a constant string of upgrades and replacements. In the following slideshow, there are four charts that illustrate just how much opportunity Apple still has in the United States.

Leaked: Apple's next smart device (warning, it may shock you)
Apple recently recruited a secret-development "dream team" to guarantee that its newest smart device was kept hidden from the public for as long as possible. But the secret is out, and some early viewers are even claiming that its everyday impact could trump the iPod, iPhone, and the iPad. In fact, ABI Research predicts that 485 million of these devices will be sold per year. But one small company makes this gadget possible. And its stock price has nearly unlimited room to run for early in-the-know investors. To be one of them, and to see Apple's newest smart gizmo, just click here!