Apple's smash handset, the iPhone, is set to capture even more of the US market share over coming years. Since the release of Apple's second iPhone, the 3G iPhone, the company has seen its device soar up the charts, threatening to knock current market leader Nokia off its throne.

The prediction comes as a result of current trends in iPhone sales - the tech giant sold 1 million handsets over the weekend the 3G device came out - and estimates of how Apple will develop its offerings. Speculations include the addition of a new iPhone Nano to the line-up, a move which could open Apple up to a much wider market - much like the iPod Nano did for the iPod, with millions more devices sold at the cheaper rate.

The US smartphone market is currently dominated by Finnish mobile firm Nokia, which has cornered global markets for many years. Battling it out for second place was Apple and Research in Motion, the latter of whom is manufacturer of the popular business phone, the BlackBerry.

Research in Motion has recently been working on a slew of new devices, including an updated version of the BlackBerry Curve which brings all of the best qualities of the company's most popular phones - the Curve, the Bold and the Storm - together in a single handset.

Nokia, similarly, continues to go from strength to strength with its N-series, a family of smartphones which see growing success with each new release. If Apple wishes to gain domination of the market over the next few years, it must work at creating competitive models to battle the offerings from its main rivals - which could easily mean a new iPhone Nano and even, as some industry fans speculate, a combination of the iPhone and iPod touch, which would lend itself to a wealth of mobile gaming opportunities.