Which product holds the Guinness World Record for the highest-selling consumer electronics product in a single day at launch?

The world of retail is full of remarkable achievements and record-breaking moments. Some product launches have been so massive they've earned their place in the Guinness World Records. Test your knowledge about the biggest, fastest, and most impressive product launches that made retail history. Can you identify which product holds the record for the largest single-day sales in consumer electronics history?

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Apple iPhone 6/6 Plus (2014) with 10 million units
Sony PlayStation 5 (2020) with 8.7 million units
Samsung Galaxy S10 (2019) with 7.2 million units
Nintendo Switch (2017) with 6.5 million units