Create a provisioning profile to authenticate your device to run the app you are
      developing. 
If you create a new App ID or modify an existing one, you must regenerate and install your
            provisioning file. 
 
-  Navigate to the  Apple Developer Member Center  Web site, and select  Certificates, Identifiers & Profiles. 
 
- From the iOS Apps section, select  Povisioning File, and
               select the + button to create a new provisioning file. 
 
- Choose iOS App Development as your provisioning profile
               type, then click Continue.  
 
- From the drop-down, choose the App ID you created and click
                  Continue. 
 
- Select your iOS Development certificate in the next screen, and click
                  Continue.
 
- Select which devices to include in the provisioning profile, and click
                  Continue.  
 
- Choose a name for your provisioning profile, then click
                  Generate.
 
- Click Download to download the generated provisioning file.
            
 
- Double-click the downloaded provisioning file to install it. 
 Xcode's Organizer opens in the Devices pane. Your new provisioning profile appears
               in the Provisioning Profiles section of your Library. Verify that the status for the
               profile is "Valid profile." If the profile is invalid, verify that your developer
               certificate is installed in your Keychain.