The big smartphone went on sale in April and zoomed to 10 million units sold about four weeks later. But it's not so easy to keep up that kind of pace.
Luke WestawaySenior editor
Luke Westaway is a senior editor at CNET and writer/ presenter of Adventures in Tech, a thrilling gadget show produced in our London office. Luke's focus is on keeping you in the loop with a mix of video, features, expert opinion and analysis.
All these numbers should be taken with a pinch of salt, as it's hard to know precisely when particular milestones were met, and Samsung's numbers generally represent sales to retailers, rather than sales to actual individuals. That said, it appears that the Galaxy S4 may be selling at roughly the same pace as last year's S3.