Every smartphone software platform has seen its market share shrink in the US over the last three months, with Google's Android marked out as the only exception thanks to strong growth.
Apple, Microsoft and Research in Motion (RIM) saw a dip in uptake, whilst Android has continued to surge onwards, coming within a hair's breadth of overtaking Windows Mobile in the number three position, according to analyst firm comScore.
RIM remained at the head of the table, with Apple in second place, although neither will be pleased with the squeeze that has been put on their market share by Google.
Android's share rose by four per cent between February and May 2010, giving it 13 per cent of the smartphone market. RIM saw nearly half a per cent shaved from its share, although its 41.7 per cent stake still puts it in a position of power, whilst Apple lost one per cent, leaving it with 24.4 per cent.
Microsoft saw the biggest loss, with nearly two per cent of its market share expunged, leaving it with 13.2 per cent.
At the end of 2009, only five per cent of the US market was using Android. This figure has continued to grow substantially thanks to the significant number of smartphones that have launched with Android on-board.
It is important to note that Apple's market share was calculated before the launch of the iPhone 4, so these figures are likely to require adjustment. However, Android seems set to overtake Microsoft in the next few months and could go on to rival the incumbent market leaders.