<ul><li>In June 3, 2011, iOS surpassed BlackBerry OS for the first time, signaling the decline of BlackBerry as a smartphone powerhouse.</li><li>The decline of BlackBerry OS began as Apple's iPhone gained popularity, showcasing a shift in the mobile industry.</li><li>BlackBerry's global market share dropped significantly from around 50% in 2009 to less than 3% in 2013, leading to the formal discontinuation of BlackBerry devices on January 4, 2022.</li><li>The book 'Losing the Signal' reveals how BlackBerry failed to recognize the threat posed by the iPhone, ultimately leading to the downfall of BlackBerry OS.</li></ul>

Today in Apple history: iOS overtakes BlackBerry OS

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