Released for Sprint and Verizon Wireless, the slim BlackBerry Curve (8530) combines a QWERTY keyboard with a touch-sensitive optical trackpad -- instead of the traditional trackball -- to make navigation reliable and responsive. RIM integrated dedicated media keys along the top of the handset to control music and videos. Users can take pictures with its 2.0-megapixel camera with 5x digital zoom, then upload them to social networking sites such as Facebook and Twitter. Additional features includes a large color display, music player with a 3.5mm stereo headset jack and built-in GPS and Wi-Fi capabilities.