Apple has announced the iPhone OS 4, the newest mobile operating system for iPhone, iPod Touch, and iPad. The iPhone OS 4 has over 100 new user features and 1500 new APIs for developers.
What should you know about iPhone OS 4? Here are the features highlights of iPhone OS 4:
Multitasking, sort of
Yes, finally, iPhone OS supports multitasking! The feature allows you to run multiple apps at the same time and easily switch among them.
However, in order to reduce consumption of system resources, the background processes are limited to 7 classes: music, VOIP (read: Skype), GPS, Push notification, Local notification, and Fast app switching.
Don’t expect the multitasking works like you have on your computer.
Now you can group iPhone apps together into a folder. Example: put all game apps into a game folder. Folder name is auto generated but you can rename it. You can also change the wallpaper of the iPhone folder.
Better Mail app
Mail for iPhone now use unified inbox so that you can have multiple email accounts delivered into one inbox. Thread messages is integrated.Open email attachments in third-party app. Also, iPhone OS 4 now support multiple Exchange accounts.
Similar to the iBooks on iPad but a smaller version. Support wireless page and notes syncing.
Read moreiPhone OS 4: What Everybody Ought to Know About