1. A method for provisioning access to web service by a mobile terminal, the method comprising: requesting, by a provisioning server, additional parameters to authenticate a mobile device to a web server hosting a web service in response to detecting a mismatch between authentication information received from the mobile terminal and existing valid parameter settings; verifying, by provisioning server, the additional parameters by: sending a test message using the additional parameters; and accessing the test message sent using the additional parameters to verify that the test message is accessible via the web service, wherein the additional parameters are verified when the test message is accessible by the provisioning server.