I do have one samsung omnia sgh-i900 purchased from vodacom south africa, my internet settings are pre-configured, it can't work with other network providers, please advise. Regards

Hi, for the phone to get internet access, Itdepends on the Sim card you insert in the phone. Each Sim cards has different network settings for each Sim cards being inserted in the phone.

If you want to get internet access for the Sim card your using,ones you insert the Sim card in the phone,Call the customer care service center of the particular Sim card you inserted, Am sure they will assist you with the internet settings on the phone.
Call is free.
Take care.