iPhone OS 4 Becomes iOS 4, Available June 21 for Free - MacRumors
Skip to Content

iPhone OS 4 Becomes iOS 4, Available June 21 for Free

In addition to announcing the new iPhone 4 at today's WWDC keynote event, Steve Jobs reviewed the upcoming iPhone OS, now known as iOS 4. Previously announced at a special event in April, the OS update will include multi-tasking, a unified inbox, folders, and other features. Newly-announced today is the inclusion of Bing as an additional search engine option as well as the iBooks app, which is currently only available for the iPad.

150647 f1275934174 500

iOS 4 has been declared Golden Master Candidate and will be publicly released on June 21st. It will be a free upgrade for existing iPhone and iPod touch owners, though depending on the age of your device not all features many be available. This is the first time that a major OS update has been free for iPod touch owners.

Related Forum: iPhone

Popular Stories

iphone 17 pro dark blue 1

Apple Preparing 'Most Significant Overhaul in the iPhone's History'

Sunday March 29, 2026 8:18 am PDT by
Bloomberg's Mark Gurman has high expectations for Apple's first foldable iPhone. In his Power On newsletter today, he said the foldable iPhone will be "the most significant overhaul in the iPhone's history." "iPhone 4, iPhone 6 and iPhone X were clearly a big deal, but this is a whole new design," he said. Like Samsung's Galaxy Z Fold 7, the foldable iPhone will reportedly open up like ...
Apple Event Logo

Apple to Launch These 15+ New Products Later This Year

Friday March 27, 2026 2:03 pm PDT by
March has been an incredibly busy month for Apple, with the company unveiling more than 10 new products and accessories. We said hello to the MacBook Neo at the start of the month, and we bid farewell to the Mac Pro at the end of it. Nevertheless, there is still a lot more to come this year. Beyond the usual annual updates to iPhones and Apple Watches, Apple's all-new smart home hub is...
Apple Apps Grid

Apple Releasing Two New iPhone Apps This Year

Saturday March 28, 2026 8:00 am PDT by
Apple is expected to release two new iPhone apps this year, including an Apple Business app and a Siri app with chatbot-like functionality. With the Apple Business app, employees at businesses using the new Apple Business platform will be able to install apps for work, view contact information for colleagues, and request support. Apple Business is launching on April 14, and it replaces Apple ...