Slovakia has nationwide 5G coverage in major cities including Bratislava, Košice, Žilina, and Nitra, primarily through Orange Slovakia and Slovak Telekom. The ETravelSim Slovakia eSIM may connect at 4G/LTE only depending on the partner roaming arrangement — confirm 5G availability with support before purchase if it's essential for your use case. 4G/LTE in Slovak cities typically delivers 30 to 80 Mbps, fast enough for streaming, video calls, navigation, and remote work without issue.