Last week we went through the first chapters of the Apple iPhone chronicles and now we'll bring you the rest of its story. Powers of 2 Ads for the Atari Jaguar made a big deal about it being the first 64-bit video game console. How is 64-bit better than 32-bit? The marketing department doesn't care as long as it can advertise a bigger number. That is not to say that Apple didn't have a good reason to jump to 64-bit with the iPhone 5s. In fact, given that the phone was introduced 5 years ago and is currently running the latest version of iOS, we'd say things worked out...
Source: https://www.gsmarena.com/counterclockwise_the_apple_iphone_makes_history_part_2-news-33390.php