Sorry it's so long, but i don't have a clue. Please helppp! I bought my iphone 3GS unlocked and already jailbroken but I didn't really know much about it. So a few days ago I was sorting out my itunes and a message popped up saying that the itunes on my phone needed updating so I went along with the update and did what it told me to do. However, when my phone came back on to activate it, in the corner of the screen it says no service although my sim card is working fine in other phones. I can get up to the stage of choosing a wi-fi network but once i connect the message 'Your iphone cannot be activated because the activation server is temporarily unavailable. Try connecting to itunes to activate it or try again in a few minutes' This is when I then tried connecting to itunes but another message appears about putting a sim in the phone (eventhough there is already a sim) ive tried a different sim card but it makes no difference. Ive been reading forums all day and have had no luck, no error number pops up, I have already tried restoring the phone by pressing the home and off button but I always end up at the same point.....any ideas?