Android's continued ascent in US sees BlackBerry lose 4.5% share in 3 months, reports comScore

Executives at RIM must wish someone would change the record: 2011 will not go down as one of the Canadian firm's vintage years, with almost every measure available illustrating a hefty slump in BlackBerry's fortunes.

The latest numbers for the US market from comScore are no different.

While both Android and iOS continue to grow smartphone share Google's platform up 4.4 percentage points between July and October to a 46.3 percent share BlackBerry has fallen further back, dropping 4.5 percentage points during the same period to its current hand of 17.2 percent.

Growing Google

That's of a total 90 million smartphone subscribers now installed in the US market up 10 percent from the preceding three month period.

Aside from Android, the only other OS showing growth is iOS, up 1 percentage point in second to a 28.1 percent share.

Both Windows Phone and Symbian fell by 0.3 percentage points in comparison, with Microsoft's share having almost halved from the end of 2010 - not exactly a glowing indictment of Windows Phone's first year on the market.

Solid Samsung

Things are far more stable or, depending on your point of view, stagnant when it comes to OEM share, with Samsung's market leading 25.5 percent share holding strong between July and October.

Closest competitor LG fell back 0.3 percentage points during the same period, but on the whole, there's currently very little movement in the market.

Indeed, the only manufacturer gaining share thanks to iPhone 4S's launch is Apple, which now holds 10.8 percent of the market, or more than 21.6 million subscribers in total.

You can view a summary of the findings on comScore's website.