The numbers are certainly compelling. Apple enjoyed record iPhone sales during its recent fiscal second-quarter, with shipments leaping a massive 113%, accounting for half of the firm's total revenue of $24.7 billion.

RIM, on the other hand, is rapidly losing share to Apple and Android. Investors are also dismayed by the fact that new superphones running the company's hyped QNX software won't hit the market until 2012.

Set against this backdrop, RIM has seen its stock slip almost 40% this year.

Apple has also slashed the gap on smartphone leader Nokia, according to tech research firm IDC. With 24.2 million smartphones shipped during the first quarter, Nokia remains at the head of the smartphone pack, although IDC recently reported that Apple is hot on the heels of the Finnish firm, recording record single-quarter shipments of 18.7 million devices

Nokia, for its part, is losing business during a major overhaul of its phones to operate on Microsoft's ( MSFT) Windows Phone 7 software.

--Written by James Rogers in New York.

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