iPhone - Edge, GPRS and Wifi

[Carbon]

Morning,

Friday I got my iPhone. Its now jailbreaked and running a contract O2 sim.

Slightly worried about the data connection, I was originally going to add the data bolt on for £7.50 But atm the I just want to see if I can live without it.

I have turned off the 'EDGE' with the 'Services' application.

When at home I have a Wifi connection, although sometimes where the Wifi icon is placed it sometime changes to a solid white or blue square (depending on the application I’m in). But say when I open Safari the icon changes instantly to the Wifi icon.

I’m now sat at work. I have a white box with an E showing. Although when I open Safari it says..'could not activate EDGE, you are not subscribed to EDGE'

I just want to know I'm not getting changed for data and just wounded if anyone can explain what the icons mean.

I hear people use the net on a none iPhone tariff, what connection do these people actually use is it EDGE or GPRS?

I hope someone can help.

Thanks

 

[Carbon]

Data roaming is turned off already.

Also when i open Email to try download i get the above error about no EDGE.

So looks like it isnt connected to anything, unsure to get the bolt on or not too.

Thanks for your reply.

 

[Carbon]

I believe it gives you a data connection without the charges on your bill...

Whether you're a regular email user, a sports fanatic, music enthusiast, gaming guru or just want the latest news and entertainment, we'll help you search O2 Active and surf the internet on the move with our Browsing Bolt Ons. Choose the data bolt on to suit your needs, there are 2 to choose from:

O2 Web Bolt On gives you unlimited* browsing through your phone for £7.50 per month

You can obtain the edge settings online for the iPhone and use them.

Has anyone done this?