Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Samsung SCH-U450 is a side-slider text messaging mobile phone. It was released September 16, 2009 to Verizon Wireless as the Intensity and on Alltel as the DoubleTake. The phone comes in three colors: black, grey, and red.The SCH-U450 features include: a QWERTY keyboard, Bluetooth, MP3 player, SMS, and a 1.3MP camera, Mobile IM and Emailing. The phone comes in two different colors; flamingo red and charcoal black. The phone also has a Micro SD card slot that is only accessible by removing the back plate.