T-Mobile Sidekick by Samsung, Matte Black (T-Mobile) 3.5-inch LCD display Sturdy "pop-tilt" hinge reveals the previously acclaimed, five-row QWERTY keyboard (480 x 800) Group Text lets you create, name, manage and participate in reply-all group text conversations Andoid 2.2 Operatin System What's in the Box: Sidekick 4G smartphone, standard Lithium Ion battery, micro USB cable, AC adapter, Getting Started guide, 2GB Micro SD card, preinstalled SIM card, warranty card. Group Text lets you create, name, manage and participate in reply-all group text conversations Sturdy "pop-tilt" hinge reveals the previously acclaimed, five-row QWERTY keyboard 3.5-inch (480 x 800) touch screen Andoid 2.2 Operatin System What's in the Box:Sidekick 4G smartphone, standard Lithium Ion battery, micro USB cable, AC adapter, Getting Started guide, 2GB Micro SD card, preinstalled SIM card, warranty card.