Apple’s iPhone accounts for 17.25 percent of the smart phone market, and 4.2 percent of the mobile phone market. This is impressive: almost a fifth of all the smart phones out there are iPhones. The data comes from asymco, who has recently investigated “the iPhone share.”

Both the mobile phone market and the smart phone market are growing. Last year, the mobile market increased by 18 percent, while the smart phone market grew by a massive 75 percent. Interestingly, the iPhone’s share of both markets is growing, too.

As you can see in the above graph, in Q4 2010 the iPhone accounted for around 17.25 percent of all smart phones. Since the iPhone was launched, three years ago, its share of the smart phone market has grown steadily. With the upcoming launch of the Verizon iPhone, this market share is set to increase further – pushing Apple’s iPhone even higher into the stratosphere of success.

Analyst Horace Dediu holds that 20 percent smart phone market share “is possible for the iPhone.” Obviously, some AT&T customers will switch over to Verizon once the iPhone launches with its new carrier tomorrow. However, the move is going to attract new customers, also.

If you ask me, Apple’s share of the smart phone market is going to increase further (you might say I’m stating the obvious here, but the iPhone already holds a pretty large chunk). More importantly, the question is by how much, and will Dediu’s prediction become a reality?

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  • Ryan

    The thing with iPhones is they hold their value, people are still happy to buy a 3G for a reasonable price. For a lot of people its just the easy interface thats so appealing, of the OS and apps alike. That and almost everyone makes an iPhone app first.

    • Editor

      You’re right. The only problem with older devices is Apple itself – they’ve outdated the iPhone 3G (with iOS 4.3), in the hopes that fans will purchase the latest handset – but this isn’t always going to happen.

      Then again, running iOS 4 on an iPhone 3G is a complete nightmare. Perhaps it’s for the best – either Apple limits its iOS, making it work well on all devices, or it pushes the iOS to the max, taking advantage of the iPhone 4′s RAM and processor.