The woman at the Leclerc said you need to phone this number (forget what is was )and register it bla bla bla and use the code on the receipt , but nah we put it into the phone , turned on roaming , restarted phone and it worked. But just the other day I was typing information on the receipts that we in french into Google to try to translate it , and I noticed that it said SIM registered at checkout or words to that effect , so I think they registered it.When you bought this originally at E.Leclerc did it work immediately or did you need to go online to activate it? I was looking at the same thing but couldn't work out if I could just stick it in my phone and expect it to work or whether it needed activating somehow.