I am about to travel to St Petersburg for one day and I am concerned about mobile internet. I own both a German and a Romanian SIM card, but none of the providers seem to offer a plan for Russia (only EU, USA, Canada, Turkey, etc). Please correct me if I’m wrong, but there is no logical reason why the EU plans should include Russia.

Is my only option buying a prepaid SIM as soon as I get there? It seems quite odd that there are no plans available for Russia. How did other other people who traveled there solve this problem?

Thank you.