Network operator says "Registered on network" but Why can't I connect to the internet? Good afternoon all,

I was originally using a GSM iPhone and I've switched to an android Samsung Galaxy Ace S5830L. I've got some problems connecting to the internet and was wondering if someone could help me resolve the issue.

These are the steps I took from Settings >> Wireless and networks >> Mobile networks >> Network operators:









I've selected SGP-M1-GSM and it says "Registered on network" but I still can't seem to connect to the internet.



What do I have to do to enable internet connection?

I'm currently using v2.3.4 if that matters.
I am not sure if this would work, but worth a try. Some mobile phones and some cell phone service providers require the use of APN. Contact your cell phone service provider for the APN.