BlackBerry Pearl 3G 9105 is an upgraded version of Pearl series. It is different from 9100 and adopts the traditional 14-key T9 keypad. Its body is small and easy to carry, and its function is powerful. It supports the 3G network, built-in 256 MB memory, supports micro SD expansion. What’s more, it also supports WiFi and GPS navigation, built-in 3.2 million pixel camera. The introduction of trackpad navigation proves that BlackBerry smartphone is on the way of using navigation button.