I have a sciphone 168 and when i am trying to use

If you have the correct Orange wap set up, then it's your SIM card, you need to call your wireless provider and they will fix this matter in their server. I have a T-Mobile sim card and my i68+ have the correct GPRS settings and I can't get in the internet, but I borrowed another T-Mobile SIM card with unlimited internet and place it in my i68+ phone and it worked. So it's most probably the SIM card IF the GPRS settings in your phone are correct.