1. Cortana is a digital, personal assistant capable of adapting to your personality and interests over time. From the Start screen, tap Cortana. Cortana can also be accessed from any screen by tapping the Search key.
   Note: A Microsoft account is required to use Cortana.
   
2. Tap the Menu icon, and tap Try Cortana.
   
3. Tap Use Cortana.
   
4. Enter text in the ask me anything field, or tap the Microphone icon to initiate a voice search.
   Note: To learn more, see the Window Phone support article: Cortana on your Windows Phone