title: How to Login Vtiger from my Android Application using Webservice
body: <p>I am using vtiger CRM - 5.4.0. I want to a create an Android Application to access Vtiger from  my Android Mobile. How to call a webservice from my Android Application to login,create record in Viger. Is it any special webservice available in Vtiger? </p>
  
  <p>*<strong><em>Note:</em>*</strong> Also i tried to login like(<a href="https://wiki.vtiger.com/index.php/WebServices_tutorials" rel="nofollow">Webservices tutorials</a>) using HttpUrlConnnection in Android.I got challenge token,while login error returns as "invalid token or token expired".some other webservice available for mobile?</p>