eSIM basics

How to keep your phone number while using a travel eSIM

The eSIM Company editorial 5 min readUpdated 11 August 2026

Yes — you can keep your normal phone number while travelling on an eSIM. Because almost every eSIM-capable phone is dual SIM, your physical SIM stays active for calls and texts on your home number while the travel eSIM carries data. The trick is setting each line to the right job and switching data roaming off on your home line so it never quietly runs up a bill.

The setup that keeps your number

  1. 1

    Keep your physical SIM in the phone

    It stays active on the network, so calls and SMS to your home number still arrive as normal.

  2. 2

    Set the eSIM as your data line

    iPhone: Settings → Cellular → Cellular Data → choose the travel eSIM. Android: Settings → Network & internet → SIMs → Mobile data → travel eSIM.

  3. 3

    Turn OFF data roaming on your home SIM

    This is the important one. With home-line roaming off, only the eSIM uses data abroad — your carrier can’t charge you roaming data fees.

  4. 4

    Turn ON roaming for the eSIM

    The eSIM needs roaming enabled to connect to its local partner network. On a travel eSIM this adds no charge — it is just the switch that makes it work.

What about calls and texts?

  • Incoming calls and SMS to your home number keep working — they travel over your physical SIM. Note your carrier may charge you to *receive* calls while roaming, so let voicemail catch non-urgent ones.
  • Making calls on your home number abroad can be pricey — use WhatsApp, FaceTime or a data call over the eSIM instead.
  • Two-factor codes sent by SMS still arrive on your home number, which is exactly why keeping that SIM active matters.

That’s the whole trick. Next, see how to install an eSIM step by step, or grab a plan for Spain, Italy or the United States.

Frequently asked questions

Will I keep my phone number if I use a travel eSIM?

Yes. Keep your physical SIM in the phone and it stays active for calls and texts on your home number, while the travel eSIM handles data. Set the eSIM as your data line and turn off data roaming on the home SIM.

Do I still receive texts and 2FA codes on my normal number?

Yes. SMS, including two-factor authentication codes, arrive on your physical SIM as usual because it stays connected to your home network.

Can I make calls on my home number while abroad?

You can, but your carrier may charge roaming rates. It is usually cheaper to call over data using WhatsApp, FaceTime or similar apps on the eSIM connection.

Does a travel eSIM give me a local phone number?

No. A travel data eSIM provides mobile data only. If you need a local number to receive calls in-country, that requires a different type of plan.

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