Rectifying Motorola Atrix 3G Connection

My husband recently told me that he was unable to access internet on his mobile phone.  I called Starhub to request for their assistance and was attended by 4 different technical specialists over a couple of days but none was able to rectify the problem.  Anyhow, one of them told me to remove the SIM card and insert it into another phone to isolate the problem ie check if its a handset issue or the line issue. After I did this, I was able to access internet on my other handset.  So it is now confirmed that it is a handset issue.

When I spoke with the operator from Motorola, she told me to:

1. Settings
2. Data Manager
1. Data delivery
2. Check that Data Enabled is ticked
3. Exit

I tried connecting internet using 3G and WiFi.    WiFi works fine but not the 3G.  So again, I called Motorola and another of their operators told me to try the following:

1. Settings
2. Wireless & Networks
3. Mobile Network
4. Access Point Name
1. Click on the menu button (the icon with 4 tiny squares on the bottom left hand corner)
5. Exit

She also told me that sometimes after upgrading of the phone software, this problem might occur as she had attended to some other users!