Signal coverage around Lake Toba and on Samosir Island in North Sumatra is generally reliable, especially in main towns like Parapat and popular tourist areas on Samosir such as Tuk-Tuk. You'll typically have good connectivity to share the breathtaking lake views and learn about Batak culture. However, if you venture to very remote parts of the island or far out onto the lake by boat, the connection might become intermittent. EastESIM strives to provide the best possible coverage, ensuring you stay connected where it matters most for your adventures.
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Will I have coverage at Lake Toba and Samosir Island in Indonesia?
Updated April 22, 2026
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