When you activate your EastESIM plan, your phone will primarily use the eSIM for data, effectively bypassing your home SIM's roaming charges for internet usage. However, it's crucial to understand that your physical SIM from home (e.g., a US or UK carrier) might still incur charges for calls or SMS if you don't disable roaming for those services. We recommend checking your home carrier's specific international roaming policies for voice and text, especially for popular destinations like Thailand or Japan, to avoid unexpected bills. For data, EastESIM has you covered.
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Do my home SIM card roaming charges apply in Asia when using EastESIM?
Updated April 22, 2026
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