Russian mobile providers are region-based; if you buy a sim in one region and then move to another, then your credit will be used up at much higher rates, so buy a new sim when you move to a different region. The prices listed here are for the Moscow region; other regions will be cheaper.

To buy a sim from a mobile phone store, you’ll need a Russian passport; instead, buy sims from kiosks where they will be already pre-registered, usually under a fake name.