Enable Wi-Fi or Cellular Data

• 1). Look at the menu bar of your iPhone. If you see an icon of an airplane, it means "Airplane Mode" has been activated. This mode prevents you from connecting to the Internet.
  
  
• 2). Press the "Home" button to return to the iPhone's home screen.
  
  
• 3). Tap "Settings" and then tap the "Airplane Mode" option to "Off."
  
  
• 4). Tap the "Wi-Fi" option to "On" to use Wi-Fi to connect to the Internet. Tap "Network" and then tap the "Cellular Data" option to "On" if you want to use your cellular network to connect to the Internet.
  
  
• 5). Press the "Home" button to return to the home screen.
  
  
• 6). Tap the "YouTube" app icon on the home screen to launch the application. If you don't see the YouTube app, you need to enable it in the settings preferences.
  
  

Enable YouTube App

• 1). Press the "Home" button to return to the iPhone's home screen.
  
  
• 2). Tap the "Settings" icon on the home screen.
  
  
• 3). Tap "General."
  
  
• 4). Tap "Restrictions" and type your passcode at the prompt.
  
  
• 5). Tap the "YouTube" option to "On." The YouTube app's icon will appear on the iPhone's home screen and you can tap it to access YouTube.