As everyone knows, the new iPhones came out, which also means new software for the crew still rocking the first generation iPhone. Anyway if you upgrade your software and you are on a monthly or pay-as-you-go plan, it seems like everything went great until… you try and use the internet. Then you get this:

“Could not activate cellular data: You are not subscribed to a cellular data service.”

If anyone from the UK is having this problem then here’s how to fix it:

You will need to go to – Settings > General > Network > Cellular Data Network…

Under ‘Cellular Data’ you will see that ‘APN’ says ‘idata.o2.co.uk’. If you are on Pay & Go then ‘APN’ needs to read ‘payandgo.o2.co.uk’ or if you are Pay Monthly then ‘APN’ needs to read ‘mobile.o2.co.uk’. There is no need to change either ‘username’ or ‘password’. Also you can leave the ‘Visual Voicemail’ settings as they are.

This should hopefully fix it for you too. If it doesn’t work then try switching ‘payandgo.o2.co.uk’ for ‘mobile.o2.co.uk’ or vice versa.

For those of you elsewhere in the world: The only suggestion I have for your problem is either; ring your provider to ask them for the correct ‘APN’ or ask someone you know who has an iPhone for their settings, providing they haven’t upgraded to OS 3.0 of course!!!