When Swype keyboard is enabled on your Android device, it means you just need to slide your finger over the letters to type a text message or email. On Sony Xperia Z3, do as follows to enable the Swype Keyboard:
1. Open Settings and under the Personal settings, go to the Language & Input settings
2. Under the list of installed keyboards and other input methods, tap the settings icon right to the Xperia keyboard.
3. Under the "Languages and Writing" settings, make sure to mark the Gesture input option
4. As long as the Gesture input option is enabled, typing is as easy as sliding your finger from one letter to another one.