A new study from ChangeWave claims that more than half of the potential smart phone customers in North America are planning on purchasing an iPhone 4S handset.

The exact figure was 54 percent as of December, though this had decreased from a huge 65 percent in September:

The late December survey looked at smart phone demand trends going forward, and finds Apple iPhone demand remains incredibly strong more than two months after the iPhone 4S release.

Among respondents planning to buy a new smart phone in the next 90 days, better than one-in-two (54%; down 11-pts) say they’ll get an iPhone.

Apple has never dominated smart phone planned buying to this extent more than two months after a major new release.

Though a significantly smaller figure, Samsung’s 13 percent (as detailed graphically in the below image) was nevertheless impressive: this figure has more than doubled since the last survey, ChangeWave’s study reports.

As you can see, Apple is ahead of the competition

For Apple, interest in the iPhone is increasing. As ChangeWave’s report notes, the company “has never dominated smart phone planned buying to this extent more than two months after a major new release.”

Interest in Apple's iPhone unsurprisingly coincides with the launch of new handsets

For the full details of the study, take a look at ChangeWave’s report.

[via MacRumors]