Furthermore, there are obvious regional differences. My US retail N900 did NOT even try to register (and the US box, as pointed out already, does NOT mention registration/Ovi). Did not show any T&C on upgrade/reboot and did not send an SMS. Whether this is due to IMEI/SIM mismatch, unsupported country, some of the installed software interfering or simply a malfunction of the registration software, I don't know.