Kyrgyzstan is in top 3 cheapest. I've been there hiking last year and was mind blown. We've bought a local SIM card + several GB of data for ~1USD. Then we went

Kyrgyzstan is in top 3 cheapest. I've been there hiking last year and was mind blown. We've bought a local SIM card + several GB of data for ~1USD. Then we went hiking and in a village which is hiking base, in the "middle of nowhere", at 3000m altitude, we had 20 Mbps LTE connection.