How can i change the plan in sprint blackberry 8330 ?

Sprint Nextel Corp.. is the third largest U.S. mobile operator for Verizon Wireless and AT & T. The company’s headquarters is located in Reston, Virginia. Sprint Nextel is in the company’s size before T-Mobile, the fourth largest mobile operator. The company was created by a merger of Sprint and Nextel, the third and fifth largest companies in the U.S.. Sprint Nextel was acquired in 2005 for 36 billion dollars. The company Sprint Nextel since the merger has about 1.3 million can attract new customers and is one of over 45.6 million mobile phone owners to their customers.The BlackBerry OS is a mobile operating system developed by Research InMotion for its BlackBerry devices. The system allows for multitasking and supports various input methods adopted by RIM for use on handheld computers, notably the trackwheel, trackball, touchpad and touch screens.Its development dates the appearance of the first handheld in 1999. These devices allow access to email, Web browsing and synchronization with programs such as Microsoft Exchange or Lotus Notes can do besides the usual functions of a mobile phone.

Sprint 8330 : Lets have a look about sprint blackberry 8330 .Sprint’s titanium-gray Curve has a desktop that looks cluttered at first, but that is only because it is chock-full with a host of useful folders to application installation shortcuts that most users will be pleased to see at boot-up. Sprint created folders for each set of applications including: Instant Messaging, Entertainment, and Communities Each icon sits a top Sprint’s sun logo splattered on a black background. If you prefer an old-school RIM theme like BB Dimension Zen, you can switch to it by visiting the Options menu.

You can unlock phone by some software modification.you can get more details by visiting the link below.

mobileunlockguide/blackberry-8330-world-edition