Unlocking a BlackBerry Storm smartphone doesn't make it incapable of running BlackBerry apps, it just makes the device compatible with a wireless service provider's network for which it wasn't initially designed to work. At the time of publication, the Storm is available in four models that use Global System for Mobile Communication (GSM) technology, which limits the amount of carriers with which those types of phones are compatible.
Applications
Because BlackBerry mobile applications are computer-based, they work on any BlackBerry phone -- unlocked or not. The Storm's unlocked status has nothing to do with its ability to run a BlackBerry app and everything to do with the network it's compatible with. This doesn't mean you won't experience problems running a BlackBerry app on a BlackBerry Storm. For example, if the app is outdated or faulty, the phone won't be able to run the app.
Unlocking
Because the BlackBerry Storm is a GSM device, it won't work on Code Division Multiple Access (CDMA) networks, such as those operated by Sprint and Verizon Wireless. The phones are, however, compatible with all GSM networks, but only if you purchase an unlock code from the device's initial provider. An unlock code lifts the phone's network restriction, making it usable on any GSM network. At the time of publication, T-Mobile and AT&T are the only national carriers that operate GSM networks, though several regional wireless service providers also offer service on these types of networks.
BlackBerry Apps
Most BlackBerry-designated apps are only compatible with BlackBerry devices, though several, including BlackBerry Messenger, are either available for or in development for use on non-BlackBerry devices. All BlackBerry apps are available from the BlackBerry App World website and come in a variety of categories, including games, productivity and instant messaging. BlackBerry App World also offers an assortment of apps developed by third-party companies, such as Microsoft, Rovio and Facebook. Like most app websites, BlackBerry App World offers free and paid apps that can be downloaded directly to any smartphone, including the BlackBerry Storm.
Considerations
Although the BlackBerry Storm is equipped to access the 2G and 3G wireless networks, it also comes with Wi-Fi capability that lets it connect to the Internet through a wireless router. This feature lets you download and install mobile apps, including BlackBerry apps, more quickly than over a 2G or 3G network connection. Using the Storm's Wi-Fi feature also helps you preserve your wireless service plan's voice, data and messaging monthly allotments using special applications that let you send and receive messages and place and receive calls through an Internet connection.
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