[tab:Details] An upgrade of the Samsung Messenger, the Samsung Rant M540 adds EVDO data and video exchange and enhanced now 2 megapixel camera. The Rants other features are similar to the Messenger, such as a slide-out full QWERTY keyboard, expandable memory card slot, music player, stereo Bluetooth and voice dialing. With it's compact size and high functionality the Rant is a winner. Battery OEM Model Number N/A Size N/A Standby Time N/A Talk Time 5.6 hours Type Lithium Ion Camera & Video Resolution 2+ megapixel Live TV Yes Streaming Video Yes Connectivity Bluetooth Yes USB Yes WiFi No Display Colors LCD Resolution 176 x 220 pixels Size 2.1' Type TFT/TFD Memory Built-in 24 MB Memory Card Slot Yes Memory Card Type microSD (TransFlash) Memory Card Max Input 16 GB Network Modes N/A Frequencies CDMA 850/1900