This information only applicable for Samsung Galaxy users who wish to set up their mobile internet connection.
As far as I know, the automatic configuration files sent by Optus tech team would not able to get the connection up for running. Phone user have to manually enter the giving parameters below :
After switching a few network providers, I am pretty sure it is not the fault of Telco problem but Samsung Galaxy design could not accept auto configuration setup.
This information definitely can save some users from calling the Customer Service seeking for solution.