Applications running in the background increase the demand on battery power and usememory. To close an application that you are not using, select .Tip: To close all open applications, select and hold the task switcher, and from the pop-up menu, select Close all.Write textKeyboard inputKeyboardYour device has a full keyboard. To open the keyboard, lift the touch screen up. Thedisplay rotates automatically from portrait to landscape when you open the keyboard.1 Function key. To insert special characters printed at the top of keys, press thefunction key, and then press the corresponding key. To enter several specialcharacters in a row, press the function key twice. To return to normal mode, pressthe function key.2 Shift key. To switch between the upper and lower case modes, press the shift keytwice. To enter a single upper case letter in lower case mode, or a single lower caseletter in upper case mode, press the shift key, and then press the desired alphabetkey.Basic use 25