Mobile Minutes: Twitter, FDA, Mobile numbers, Apple

Who's really the king of mobile advertising?
Twitter recently announced that it had submitted an S-1 to the Securities and Exchange Commission, confirming long-standing speculation that the social media platform would file for an initial public offering sometime this year, USA Today reports.
Click here to read the entire article on USA Today.

FDA issues final rules governing mobile medical apps
The U.S. Food and Drug Administration issued final rules covering the development of mobile medical apps on Monday, saying it will focus it oversight on those apps that have the potential to harm consumers if they do not function properly, according to Fox News.
Click here to read the entire article on Fox News

Where mobile isn't: countries with the lowest percentage of subscribers
Can you hear me now? If you're in Burundi, probably not, per Bloomberg.
Click here to read the entire article on Bloomberg

Apple sells nine million iPhones over launch weekend
Apple Inc. sold nine million of its latest iPhones in their first three days in stores, a new company record, and said quarterly revenue and margins should be near the high end of its previous forecast, according to the Wall Street Journal. 
Click here to read the entire article on WSJ