Lock the screen orientationThe screen rotates automatically when you turn the phone 90 degrees. To lock the screen inits current orientation, swipe down from the top of the screen, tap All settings >System > Display, and switch Rotation lock to On .Screen rotation may not work in all apps or views.Back, start, and search keysThe back, start, and search keys help you navigate your phone.• To see which apps you have open, tap and hold the back key . To switch to another app,tap the app you want. To close an app, tap at the top right corner of the app.• To go back to the previous screen you were in, tap the back key . Your phone remembersall the apps and websites you've visited since the last time your screen was locked.• To go to the start screen, tap the start key . The app you were in stays open in thebackground.• If your phone has a large screen, to bring the action center closer to your thumb, tap andhold the start key . The screen goes back to the normal view automatically.• To search the web or for items on your phone, tap the search key .• If your phone has Cortana, to control your phone with your voice, tap and hold the searchkey , and say what you want to do. Or, to change the Cortana settings or use otherCortana functions, tap the search key .Cortana is not available in all regions and languages. For information on the supportedregions and languages, go to www.microsoft.com/mobile/support/cortanaregions.© 2016 Microsoft Mobile. All rights reserved. 26