Originally Posted by
imm2b
Once arrived in Europe, we can just pop in the SIM and it will work right away? Since it's a Spanish SIM, I assume we'll have to be in Spain first in order to activate?
It will come pre-activated (a follow-up email asking for your passport info will likely be forthcoming), so there's no need to visit Spain to start using it. If you have a GSM phone (so non-Sprint/Verizon), you can turn data roaming off and try the SIM at home to make sure it works before you even get on the plane. Dial *111# <send> to check the balance.
One thing to note is that you'll want to make sure that the APN settings are being properly read by your phone, otherwise you'll have to enter them manually to ensure you have internet access upon arrival.