When using static  credentials,  the workflow application does not prompt the user  for credentials, instead it  passes the credentials to Unwired Server automatically and displays the workflow application's start screen.
- Remove the Credential Request starting point and screen from the workflow application (so the client is no longer prompted for credentials).
- From Flow Design, select  Authentication, Use static credentials,  and Use certificate-based credentials. 
- Click Generate from Certificate.
- Browse to the location of the *.p12 certificate file.
- Enter the certificate's password, select the alias and click OK.
- Save and regenerate  the Mobile Workflow package, and reassign it to a device.