Consumer demand for Apple’s smartphones is still high, with each new model outselling the previous version, reported research company, Ovum.

Despite the iPhone 4’s initial antenna problems, Ovum report that sales at the Asia-Pacific launch of the product should not be affected.

Ovum attributes the success of the iPhone to a few factors including a unique user experience and an end-to-end platform that integrates Apple’s own services (iTunes), as well as third party services on the device (through the App store).

The iPhone 4 does face stronger competition than any of its predecessors though, as the Google Android has been increasing in popularity over the past to years.