Part three of our smartphone OS review series will cover Palm OS. Previously we covered the iPhone OS/Droid OS and the BlackBerry OS

Read this article:
iPhone OS vs Android vs Blackberry OS vs Palm OS – Part III
2010 has been a great year for smartphones. With Verizon and AT&T raging subliminal war, Android slowly but surely gaining ground in the smartphone ranks, and the release of Apple’s newest iPhone 4, there has been much to talk about

Link:
iPhone OS vs Android vs Blackberry OS vs Palm OS
While iOS 4 is receiving mixed reviews—mostly due to disappointment in the multitasking feature—the folders feature of the new OS still works fairly well, but is nearly impossible to find without a little guidance. To make folders, enter the app editing mode by holding your finger on any app

Read more:
Make Folders on iPhone
With iPhone 4 in route from China to the hands of the 600,000 consumers who were able to pre-order it, Apple has released Ii 4 to the rest of the world. As we discussed previously, there are many benefits to iOS 4 , most notably the ability to multitask, though Apple recently decided to only endow this capability to 3GS users (and iPhone 4 users, of course). To update the iPhone, you must first make sure your iTunes software is up to date.

Read more:
Update iPhone 3G and 3GS to iOS 4
With iPhone 4 in route from China to the hands of the 600,000 consumers who were able to pre-order it, Apple has released Ii 4 to the rest of the world. As we discussed previously, there are many benefits to iOS 4 , most notably the ability to multitask, though Apple recently decided to only endow this capability to 3GS users (and iPhone 4 users, of course)

See more here:
Update iPhone 3G and 3GS to iOS 4