The Good: The RIM BlackBerry Curve 3G 9330 has a very responsive optical trackpad, convenient external media keys, Wi-Fi, stereo Bluetooth, GPS, EV-DO, a 2-megapixel camera, and a media player. It's upgradable to OS 6, and is very affordable. The Bad: The BlackBerry Curve 3G 9330 only has EV-DO Rev. 0, the microSD card slot is located behind the battery cover, and photo quality is mediocre. The Bottom Line: The BlackBerry Curve 3G 9330 is a very affordable entry-level smartphone with a solid feature set and great call quality. The RIM BlackBerry Curve 3G 9330 from Sprint is identical to the one from Verizon Wireless. Hardware specifications are the same--it has that same Curve form factor, the optical trackpad, the flat navigation array, and the external media player keys on the top. It's also very similar in design to the BlackBerry Curve 3G 9300 for T-Mobile, so we'll point you to that review for design details. The BlackBerry Curve 3G 9330 for is available for $49.99 with a two-year service agreement.\n\nFeatures\nAs with the other Curve 3G handsets, the BlackBerry Curve 3G 9330 for Sprint ships with BlackBerry OS 5. However, it is upgradable to , which promises a number of improvements. These include a revamped home screen, universal search, easier access to messaging, and a new WebKit browser. For more information on OS 6, check out our review of the BlackBerry Torch.\n\nThe Curve 3G 9330 has all the usual BlackBerry features like strong e-mail support. It can sync with your company's BlackBerry Enterprise server as well as other corporate e-mail systems like Microsoft Exchange, IBM Lotus Domino, or your own POP3 and IMAP accounts. Other features include voice dialing, conference calling, speed dialing, a speakerphone, a vibrate mode, and text and multimedia messaging. Instant messaging is a big feature, with BlackBerry Messenger taking center stage. The phone also supports AIM, ICQ, Yahoo, and Windows Live Messenger. \n\nAs the name implies, the Curve 3G has 3G support in the form of EV-DO Rev. 0. Other features include visual voice mail, GPS with Sprint Navigation support, Wi-Fi (802.11 b\/g), and stereo Bluetooth. BlackBerry will make business professionals happy with PIM apps like the calendar, a memo pad, and DataViz's Documents To Go. The phone has 512MB of flash memory, and a microSD card slot is hidden behind the battery cover if you want some extra storage--it takes cards of up to 16GB.