Many travelers assume that because Hong Kong is a Special Administrative Region of China, their Mainland China SIM card will offer free or cheap roaming. This is often not the case. Most Mainland Chinese carriers treat Hong Kong as a separate international zone, incurring significant roaming charges. Relying on your home SIM for data in Hong Kong can lead to unexpected high bills. An EastESIM specifically designed for Hong Kong, or a regional Asia plan that includes it, is a far more cost-effective and convenient solution for staying connected while exploring this dynamic city.
Is roaming free in Hong Kong with my Mainland China SIM card?
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