It worked on and off in Italy (main cities). In towns outside the city, good luck, you'll be out of service and wondering with no phone service or internet.
Even in remote areas I was able to get a decent signal. I used it mainly for checking emails, Facebook. You will need to open the item to find the number on the inside.
I purchased this sim card for myself and my husband travelling to India to visit our family and friends. I was surprised at the quality of connectivity we had while on road and we still had some data left at the end of our trip.. Overall good purchase!
What a great product, so simple to pay for, delivered within days. Subsequently regsitered on line ( I think this could have been made more clear as it was a bit obscured by other info) otherwise managed to reister online very simply ( uploaded a few bits of ID) then hey presto 3 or 4 days later im fully registered. Just remeber this is a data card only however, Skype/ Whatsapp work and you dont even need to have a new Whatsapp number ( you keep your current one)