Thanks for the replies. Drewguy, thanks I will try that trick.
+1 for the airplane Mode and wifi ON - it works fine!
Maybe this should be a new post question but I'll try and ask here. Does anyone know how iMessage works? I can't seem to work it out. Can I send iMessages to friends and family at home without incurring a fee? Obviously they need to have an iPhone with iOS 5 installed.
I've been reading up about it and it seems the more I read the more I become confused (use email address, turn OFF SMS etc...)