Kiev star is by far the most popular and has better coverage and connections, MTC ranks in the middle while Kiev LIFE has the cheapest local and international packages but suffers from bad coverage and many dropped calls.

You can buy SIM cards for all these operators from almost any kiosk in Kiev and topping up the credits is a simple scratch card purchase and code entry. Alternatively you can use the automatic paystations but some Russian or guesswork is required.