Registration takes place via the activation, is drawn to the case of delivering the SIM card.
A little nervous is you may be sent because the simcard neither Pin, Puk still mobile number. This takes place after activation by email and happened to me within an hour.
The credentials that you are benötig log on before activating the Service Center does not exist. So keep calm, carry only the activation and wait for the email :-)
Update 22/04/2015
I am still very happy with this card, but would point to make sure that coverage is chosen. My daughter has lately very, very often no network coverage, but certainly can be change by region with the O2 card. I had with the Vodafone card never a gap in coverage and will now order the Vodafone card for my daughter also.
