Talk:Russia/@comment-46.251.19.29-20170728192439/@comment-85.212.83.160-20170728195406

You can compare this in their coverage maps.

Yota: https://www.yota.ru/coverage/#/coverage

Megafon: https://moscow.megafon.ru/corporate/help/offices/#coverage

You will notice that 2G/3G is almost the same, but 4G coverage is a little bit smaller as Yota doesn't have access to 800MHz. Furthermore they can't offer LTE+ by band aggregation.