The two smartphones are essentially the same device with one difference. The 9900 supports HSPA+ mobile broadband, while the 9930 supports both the CDMA EV-DO Rev A standard, which is widely used in North America, and HSPA+ global roaming. The phones are the first in RIM's line-up to incorporate near-field communication (NFC) technology.
In a statement, Research In Motion (RIM) chief Mike Lazaridis said the handsets "offer a highly refined user experience with blazingly fast performance, a brilliant touchscreen and an outstanding typing experience".
One of the new features of the BlackBerry 7 OS is its Liquid Graphics touchscreen technology, which allows a frame rate of up to 60 frames per second. The display on the phones offers a pixel density of 287 pixels per inch — less than the iPhone 4's 326, but greater than the Samsung Nexus S's 235. This density is created via the use of a 480x640-pixel resolution on the 2.8-inch capacitive screen.
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