Phone numbers for travellers & expats: keep your home-country number abroad

Moving abroad, or spending months on the road, exposes a weakness most of us never think about at home: a surprising amount of our digital life depends on one phone number. Banks, messaging apps, email providers, delivery services and government portals all send codes to it. When that number stops working, or starts costing a fortune to use, the problems arrive quickly.

This guide covers the practical options for staying reachable while you are away, how to organise your accounts so a lost SIM is not a disaster, and what to do before you leave. One point first, to be clear: PhoneBorn cannot port or transfer your existing SIM number. What it can do is give you a new real mobile number in a country you choose, which you can use from anywhere through a browser. We will explain where that fits and where it does not.

The problems people run into abroad

Roaming costs

Many plans still charge for roaming outside a home region, and receiving SMS is not always free. Some travellers simply switch off roaming to avoid surprise bills, which also switches off the codes their banks send.

Codes going to a SIM you cannot use

The classic scenario: you land, buy a local SIM, put your home SIM in a drawer, and a week later your bank wants to confirm a payment by SMS. The code goes to the SIM in the drawer, or to a SIM that has no signal because roaming is off.

Inactive prepaid SIMs being deactivated

Prepaid numbers in many countries are deactivated after a period with no top-up or activity. The exact rules vary by carrier and are not always well advertised. Expats sometimes discover this only when a code fails to arrive.

Number recycling

Once a number is deactivated, the carrier can eventually reassign it to someone else. That person may then receive codes meant for your accounts, and may even be able to use them for password resets. This is one of the strongest reasons not to let an important number lapse.

Your options

There is no single right answer. Most people end up combining two or three of these.

Keep your home SIM active with a cheap plan

Downgrade to the cheapest plan that keeps the number alive, and check whether receiving SMS while roaming is free or low-cost. This preserves your original number, which matters for banks and government services. The downside is that you need the physical SIM in a device, and roaming coverage can be patchy.

Move your number to an eSIM or MVNO that keeps it

In some countries you can port your number to a low-cost provider or convert it to an eSIM, often keeping the same number. An eSIM lets a dual-SIM phone hold your home number alongside a local SIM without swapping cards. Whether this is possible depends on your carrier and country.

Get a local SIM abroad

A local SIM gives cheap data and calls where you live now. It is ideal for daily life but it is a new number, so it does not help with accounts tied to your old one unless you update them.

Use Wi-Fi calling where supported

Some carriers let your home number make and receive calls and SMS over Wi-Fi even while abroad. Support varies by carrier, phone model and destination country, so check before you rely on it.

Keep a second number online for accounts

A separate number you control through a browser can take over verification for the apps and services that do not need your original bank-linked number. Because you can read messages anywhere with an internet connection, it does not matter which SIM is in your phone that day.

Options compared

A strategy that works

The goal is simple: no important account should depend on a SIM you might lose, forget to top up, or be unable to use.

1. Sort your accounts into groups. Banks and government services in one group. Everything else, such as messaging, social media, email, shopping and work tools, in another.
2. Keep bank numbers according to each bank's rules. Some banks require a phone number from their own country and may not accept a foreign or non-local number for security codes. Rules differ widely, so check with each bank before changing anything. For many expats this is the main reason to keep the home SIM alive.
3. Move non-bank accounts to a number you control online. For apps like WhatsApp, Telegram, Instagram or your email provider, a number you can read from any browser removes the SIM problem entirely. If you move WhatsApp, use its built-in change-number feature so your chats and groups follow you. Our WhatsApp verification page explains how verification works there.
4. Add an authenticator app wherever possible. Time-based codes from an authenticator app work offline and do not depend on any phone number. Many services let you use one instead of, or as well as, SMS.
5. Save backup codes. Most services that offer two-step verification also provide one-time backup codes. Store them in a password manager or print them and keep them somewhere safe.
6. Keep numbers renewed. A number is only useful as long as it exists. A yearly plan or auto-renewal reduces the risk of losing a number simply because a payment was missed while you were busy moving.

We go deeper into this in our guide on keeping your number for 2FA and avoiding lost access.

Which country should your second number be from?

Usually the choice is one of two.

• Your home country, if your accounts, contacts and online identity are rooted there and you plan to return. For example, a United Kingdom number for someone moving from the UK.
• Your new country of residence, if you are settling long-term and want your accounts to match where you now live. For example, a Germany number for someone relocating to Berlin.

Some people who work with clients or services in North America choose a United States number for those accounts. The underlying principle is consistency: pick a country that matches how you actually use each account.

Checklist before you leave

• List every account that sends you codes by SMS, and note which number each uses.
• Call or message each bank to confirm what happens if you are abroad, and whether a non-local number is acceptable.
• Decide whether to keep your home SIM active, and check the cheapest plan and roaming SMS rules.
• Check whether your phone supports eSIM and dual SIM, and whether your carrier supports Wi-Fi calling abroad.
• Set up an authenticator app on your phone and enable it on your key accounts.
• Download and store backup codes for email, cloud storage and password manager accounts.
• Move non-bank accounts to a number you can access from anywhere, and confirm each one works by triggering a test code.
• Set renewals to automatic or choose a yearly term for any number you depend on.
• Make sure your email account, which resets most other passwords, has at least two recovery methods.
• Write down your carrier's customer service contact that works from abroad.

Where PhoneBorn fits

PhoneBorn gives you a new real mobile number in around 200 countries, managed from a browser with a live SMS inbox. It does not replace or port your existing SIM number. It gives you a stable second number for the accounts that do not need your original one, readable from any country and any device.

Every phone-number plan, monthly or yearly, includes unlimited incoming SMS, 500 outgoing SMS and 1,000 calling minutes each month, plus unlimited incoming calls. You keep the number as long as you renew, and auto-renew is available so a busy move does not cause it to lapse. It works with WhatsApp, Instagram, Google, Telegram and more than 110 other apps. Unlike VoIP or virtual numbers, these are mobile numbers, which many services handle more readily.

If you buy a number and it has never been used for any SMS or call, you can request a refund to your wallet within seven days from the dashboard. The details are on our refund policy page.

Responsible use

A second number is a tool for keeping access to your own accounts. It does not change any service's terms. Follow each platform's rules, respect your bank's requirements for registered numbers, and never use a number for fraud, spam, impersonation or getting around bans.

Final thoughts

Travelling or moving abroad does not have to mean losing access to your accounts. Keep the numbers your bank insists on, move everything else to a number you control from anywhere, add authenticator apps and backup codes, and keep every important number renewed. An hour of preparation before you leave can save weeks of recovery forms later.