No so long ago BlackBerry dominated the market but it is now on the verge of losing ground with compamies allowing their employees to exercise options to choose their own smartphones and and add third party security applications which were blackberry’s  hall mark.

A media report says one of the BlackBerry''s main selling points has been Research in Motion's top-tier security and management features, which appeal to IT managers eager to control what workers do with corporate information and protect business systems from cyber attacks.

But with companies such as Good Technology and MobileIron offering applications that could untether IT managers from their BlackBerrys, analysts say that consumer-market pressures could intrude into RIM's mainstay corporate market.

Only two of nine major U.S. companies contacted by Reuters said they exclusively use the BlackBerry, namely Boeing and Exxon Mobil.

The remaining seven -- Alcoa, Caterpillar, DuPont, Kraft Foods, PepsiCo, Microsoft and Verizon Communications -- support at least one other brand, such as Apple's iPhone or phones that run Google's Android or Microsoft Windows.