While in the beginning, you actually had to fiddle with an sqlite database, you now can simply edit the APN settings from within them phones menu system. Here is how:
- select the phone icon (as if you wanted to make a call)
- go to the menu at the top and select preferences:
- enable the "manual settings" field and tap on "Edit Network Settings"
- Insert your settings
It worked fine for me without any manual settings on simyo (german virtual provider using the eplus network), but I'm sure this will come in handy