Usually not. Most phones support one physical card alongside one active eSIM profile, so the home SIM can stay in the tray for calls and bank SMS while the eSIM carries data. What you do need to get right is which line is set for data, and to leave data roaming off for the home line so no unintended charges arise.

Both hold the same kind of identity and use the same networks, so the form factor is not what determines quality. What determines it is the network the plan uses in that country, where you are standing, and the handset itself. We do not quote comparative speed figures between the two, because no such general figure exists.

Contact your own operator as quickly as you can through their app or website to suspend the line and ask about a replacement, which in most cases has to be issued once you are home. In the meantime, if you have an eSIM for data, messaging apps and email still work — but SMS to the old number will not reach you, which is why moving important accounts to an authenticator app before you travel is worth doing.

Yes, with a physical card, which is one of the reasons cards still have their place. Two things are worth checking first: whether the handset is unlocked, and whether it supports the bands used at your destination. Both are questions for the operator you bought it from and the manufacturer's own information for that model. If you are unsure whether your phone has eSIM at all, our device checker is the place to start.

It depends on what you actually need. If it is only data, installing an eSIM before you fly means the connection works the moment you land, with no counter to find and no queue at the most tiring point of the trip. If you genuinely need a local number for calls, a physical card answers that better. Plenty of people do both: the eSIM from day one, and a local card later if it turns out to be necessary.