Quick answer: Most travel eSIMs give you mobile data, not a phone number. You keep your home number for normal calls and texts, and you use WhatsApp, FaceTime and other apps over the eSIM's data. If you need a local number, check the plan for voice and SMS before you buy.

Does a travel eSIM come with a phone number?

Usually not. A travel eSIM is a data plan. It connects your phone to the internet in another country, and that is all it promises.

An eSIM is, in Apple's words, "an industry-standard digital SIM built into your iPhone." Think of it as a second SIM card you install with a QR code instead of a tray. Whether that SIM has a phone number depends on the plan you buy, not on the eSIM technology.

In the eSIMzee catalog, each plan lists whether it includes voice and SMS. We checked the 50 cheapest plans for each of eight popular destinations on 2026-10-27, and none of them listed voice or SMS. Always read the plan details first.

Can I make calls and send texts on a data-only eSIM?

You cannot make normal phone calls or send regular texts from a data-only eSIM. You can still talk and message through apps. WhatsApp, FaceTime, iMessage and similar apps only need an internet connection, and your travel eSIM provides it.

Your home SIM stays in the phone for the old-fashioned kind of call and text. That is why dual SIM matters. The next section shows how it works.

How do I keep my home number and use a travel eSIM for data?

Run both SIMs at once and give each one a job. Your home SIM handles calls and texts. The travel eSIM handles data.

Apple describes this exact setup: adding a local data plan while you travel and keeping your home number for calls. On an iPhone, follow these steps:

  1. Open Settings, then Cellular (or Mobile Data).
  2. Tap Cellular Data and pick your travel eSIM. Apple says an iPhone can use one cellular data network at a time.
  3. Keep your home line as the default voice number.
  4. Turn Data Roaming off for your home line so it does not run up roaming charges.

Apple also notes that both numbers can make and receive calls and messages. If Data Roaming is on for the data number, Visual Voicemail and MMS stop working on the voice-only number.

On a Google Pixel, go to Settings, Network & internet, SIMs. Google's help page lets you choose a SIM for calls, texts and mobile data separately. You can also pick "Ask every time" so the phone asks which line to use for each call. Only one SIM can be the default for mobile data.

Is your phone dual SIM ready? Use the eSIMzee device checker before you buy.

Will WhatsApp keep working with a travel eSIM?

Yes. WhatsApp ties your account to your phone number, not to the SIM that supplies data. Your chats and calls run over whichever connection your phone is using.

The catch comes at sign-in. WhatsApp verifies your number with a 6-digit code sent by SMS or phone call, and it says you need a SIM card with that same number. A data-only eSIM cannot receive that code.

So keep your home SIM in the phone, switched on, for the whole trip. If you reinstall WhatsApp or move to a new phone abroad, the code will arrive on your home line.

What about bank codes and other SMS verification?

Banks and apps send codes to the number you registered with them. Installing a travel eSIM does not move that number. The code goes to your home SIM, so you need that SIM reachable.

Before you leave, check which accounts need an SMS code. Ask your carrier whether it supports Wi-Fi calling and texting, because Apple notes that Wi-Fi Calling decides whether you can answer one line while a call is active on the other. Move accounts to an authenticator app where the service allows it.

When should I buy an eSIM with a phone number?

Choose a data-only eSIM if you only need maps, messaging apps and browsing, and you keep your home SIM for codes. It is the simpler and cheaper choice for most holidays.

Choose a plan with voice and SMS if you need a local number for deliveries, local bookings or business calls. Check the plan's voice and SMS entries, then compare options on the eSIMzee compare page or browse all providers. Stay with roaming on your home plan only if your carrier's daily fee is lower than a local data plan.

Frequently asked questions

Does installing a travel eSIM remove my existing number?

No. The eSIM is added alongside your home SIM. Apple says you can manage up to eight or more eSIMs, so your home line stays in place.

Can a data-only eSIM receive SMS verification codes?

No. A data-only plan has no number to receive texts. Codes go to your home SIM, so keep it active.

Do WhatsApp calls work on a travel eSIM?

Yes. WhatsApp calls and messages use data, so any working data connection carries them. Only the first-time verification needs a SIM with your number.

How do I know if my plan includes a number?

Read the plan page before buying. In the eSIMzee catalog, each plan lists voice and SMS support.

Can I use my home number for calls while abroad?

Yes, if your home carrier allows it, and roaming charges may apply. Turn Data Roaming off on the home line and use the travel eSIM for data.

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