Is this EastESIM valid for Taiwan or Hong Kong if I have a China plan?

No, this is a critical point for travelers to understand when planning an Asia trip. While Taiwan and Hong Kong are geographically close to mainland China, they operate under distinct telecommunications regulations and are considered separate roaming zones. An EastESIM plan specifically designed for China will generally not provide coverage in Taiwan or Hong Kong, and you would face extremely high roaming charges if your home SIM card was used there. For seamless connectivity across these regions, EastESIM offers specific plans for Taiwan, Hong Kong, or comprehensive multi-country Asia plans that include all three, ensuring you're always connected wherever your journey takes you.