Ultimate Mobile OS Showdown: iPhone vs Android vs webOs vs Blackberry vs Windows Mobile vs Symbian
Organizational Tools
The BlackBerry is an excellent messaging and organizational tool, and the contacts and scheduling apps are the best we tested. The contacts manager has several advanced features for dialing, texting, and e-mailing anyone in your list. The calendar has unique features for seeing multiple calendars at once (say, Yahoo and Gmail) or just seeing one at a time. It's also worth noting that, with the multi-tasking support, the OS allows you to pull up a contact, copy information, switch to your mail client, paste it in, and have a browser, schedule, and task list open at the same time. In this sense, BlackBerry OS is a highly capable, multi-tasking OS that promotes better organization. The catch is that these functions are not as easy to perform as they are on the Palm Pre or the iPhone.

One perk of BlackBerry OS is you can color code meetings for each synced account.
PC and Database Sync
The BlackBerry OS is a bit outdated in how it syncs data. You have to install a BlackBerry Desktop Manager client to sync contacts, calendar items, tasks, and memos back to the desktop. There is a program called SugarSync that does a similar function but uses the Web instead. We did not find any apps in the App World that sync to a database. The iPhone has Daylite Touch and Qlikview, among others, that connect to a server for data sync. There's also PocketMac (www.pocketmac.net), a tool for Mac users to sync data between your Mac and a BlackBerry. RIM offers BlackBerry Enterprise Server for data syncing between BlackBerry devices and company servers.

Sugarsync allows you to offload files for back-up and storage form your BlackBerry device.
Messaging
The BlackBerry is dominant in business because of two words: push e-mail. RIM made the concept widely known even back when the devices used outdated pager networks. E-mail just appears automatically on the phone, so you don't have to click a send/receive option. Oddly, when adding multiple e-mail accounts such as Yahoo! Mail and Gmail, the BlackBerry OS adds a separate mail icon for each one, and then shows you – in a test string below the main screen – how many new messages you have for each mail icon. It's a different approach, but we prefer to have just one mail app that shows messages in one interface – and the Palm Pre is the best implementation of this idea.

When you add a new Webmail account, BlackBerry OS shows a different mail icon for each.

Message appear on a small window but the load times and app speed were excellent.
Flash Support
BlackBerry OS does not support Flash or Flash Lite 3.0. However, the BlackBerry browser formatted a Cinemanow.com page using static image formats correctly instead of just displaying a Flash error message. Our test site for GideonMobile.com, for Flash Lite, just appeared blank.

No surprises here -- BlackBerry OS does not support Flash sites like Cinemanow.com
Network Support
The BlackBerry OS on the Curve 8900 only ran at about 200 Kbps over the EDGE network, and connected over standard 802.11g for Wi-Fi – not the 802.11n protocol found on some corporate campuses. The BlackBerry OS does support Bluetooth Stereo A2DP.
Conclusion
When we added up all the qualities we prefer in a smartphone OS, such as multi-tasking support, a good selection of bundled and PIM apps, fast operation, and messaging prowess, we realized that BlackBerry OS is a hair more powerful than iPhone 3.0 OS. Overall, apps loaded faster than they did on the iPhone 3GS. For those who want a rich selection of apps and better media and sync support, the iPhone is a better choice, but we really need multi-tasking in our OS.