泰国出发旅客的 eSIM 使用指南

No, and generally you should not. The Thai number is what receives verification codes from banks and other services. The workable arrangement is to keep the SIM in place, leave the line enabled for SMS, turn off data roaming on it, and let the eSIM carry the data.

It depends on your operator and your plan. In some cases receiving a call while roaming is charged; under some plans it is not. We do not know each operator's terms and cannot quote figures, so check with yours before you fly. What is certain is that with data roaming off on that line, it will not consume data.

First check the Thai line is still enabled and has service, then toggle airplane mode once so the phone re-registers on a network. If it still does not arrive, use whatever alternative the app supports — in-app approval or a backup code — and contact your bank directly, since cross-border SMS delivery sits outside anything we operate.

It depends on the itinerary. If you are mainly in one country, a single-country plan usually fits better. If the trip crosses several countries for a few days each, a regional plan saves you switching profiles. The exact country list belongs to each plan and is shown on its own page, so read it in full before deciding.

Install it at home — you should, because installation needs a stable connection. When the validity period starts, however, depends on each supplier's own terms, which are stated on the plan page and in your confirmation email. Read those terms first, then decide when to switch the line on.