旅行 eSIM 和运营商的漫游包有什么不同？

No. Your number stays on the phone, because the eSIM is installed as a second line rather than a replacement. The usual arrangement is to keep the home line on for calls and messages while switching off its data roaming so no data charges arise by accident. Whether receiving calls or texts abroad costs anything is a matter of your operator's terms, so ask them before you travel.

We cannot answer that for you: it depends on your operator, the destination, the length of the trip and how much data you really use. The most direct comparison is to estimate your daily usage first, then price your operator's roaming pack against an eSIM plan offering a similar allowance over the same period.

Usually not, because travel plans are typically data only. Calling through internet-based apps works as normal. If you genuinely need traditional voice calls to local numbers, check that plan's details before buying, or ask us which options state something about it.

You do not need to cancel anything contractually. But if you have already subscribed to a roaming pack you no longer intend to use, check with your operator whether it will still be charged, and switch off data roaming for the home line on the phone so it cannot quietly take over mid-trip.

Yes, provided you have some internet at that moment — hotel or airport Wi-Fi, for example — because installation downloads the profile. The caveat is that public Wi-Fi is not always stable enough. Given the choice, buying and installing at home remains the smoother path.

Yes, provided the home line is still switched on and attaches to a network at your destination. What you should verify is your operator's terms and charges for that country, which differ by operator and by destination. Do not switch the home line off if you depend on SMS codes.