Spain: no problems and working fine, voice and sms trouble free
Switzerland: transit in Zurich. Finding network and it works fine. Nothing more I would expect. Only problem: although it is not stated in the user leaflet of the SIM card I had to see that incoming calls are charged!
India: as I previously said there are difficulties. According to BLUEFIREWIRELESS based on the political situation with Pakistan
No idea what they mean
Saudi Arabia: no network login. I have just sent an Email and waiting for response. I will be in Riyadh until Monday and then proceed to Dubai. Let's see what is going on there.
Salam Aleikum from Riyadh