Had a quick search but couldn't find anything similar here. I had an iPad 2 and have upgraded, taking the sim card from my iPad 2 to put in the new iPad. However, I'm unable to access the O2 network. I've looked at the O2 site and it isn't any help. Any ideas on what to do? I've ensured the APN settings are right according to O2 and they are. Not sure what else to try. May need to talk to O2 tomorrow.