This is a guest post from Rohan Pandya from Tweaks-Tricks
For O/S 4 and 5 systems 8520,9300,9700,9780
click Options.
Click Advanced Options
TCP
Enter the APN: www
Press Menu key and Save
For O/S 6 and 7 systems 9900,9800,9860,9360
Go to home screen> Select Options > Device > Advanced System Settings > TCP/IP
Enter the APN : www
Press Menu key and Save