The short version: To avoid getting stuck on SMS verification codes (one-time passwords) for banking, brokerage, and credit card logins while you're abroad, sort out three things before you leave: (1) decide how you'll keep your home mobile number active instead of cancelling it, (2) confirm that number can still receive SMS where you're going, and (3) arrange a separate data connection for everyday use abroad. The conditions and fees for keeping a number active vary by carrier, plan, and timing, so always confirm the final details with your provider's official information (this reflects general practice as of June 2026). For the practical side of actually receiving home-country SMS codes while overseas, see our detailed guide, "How to receive your home bank, brokerage, and credit card SMS codes while abroad". It's worth a read alongside this one.
- Prepare three things separately before departure: keeping your number, SMS reception, and data connectivity
- SMS verification should be handled on the side that keeps your home number active
- Travel eSIMs like Bloomy are data-only and cannot receive SMS verification codes
- Phone calls and SMS aren't supported, but app calls via WhatsApp and similar services work fine
- Confirm number-retention terms, fees, and overseas SMS reception with each provider's official information
Why preparing before you leave matters
If you only discover after arriving that "my home SMS codes aren't coming through" or "my number no longer works," you can find yourself locked out of bank logins, brokerage accounts, and credit card identity checks. That's because many of these processes send a one-time password by SMS to the phone number you registered back home. If you cancel the number, or leave your phone powered on abroad in a way that triggers unexpected charges or issues, you could lose the very number you need for verification. That's exactly why it's reassuring to decide how you'll handle your number and SMS while you're still home and can sort things out calmly.
First, understand how "phone number," "SMS," and "data" relate
These are easy to mix up, so let's clear them up first.
- Phone number and SMS: Your mobile number and the short messages sent to it. This is mainly what banks, brokerages, and card issuers use for verification.
- Data connectivity: Your internet connection, used for maps, translation, apps, and so on. This is a separate role from SMS verification itself.
The key point is that "keeping your number and SMS" and "getting online abroad" can be prepared separately. Some people keep a plan with their number active while arranging cheaper local data separately through an eSIM. For the basics of handling numbers and SMS, our articles on phone numbers and SMS can help you put the pieces together.
A pre-departure preparation checklist
Before you travel, it helps to go through each of these items one by one.
- ☐ Check and update the registered phone number on your banking, brokerage, credit card, and other apps
- ☐ Confirm the verification method for each (SMS, app-based authentication, or email)
- ☐ Decide how you'll keep your home number active rather than cancelling it (more below)
- ☐ Check with your plan whether you can still receive SMS while abroad
- ☐ Organize your login IDs and passwords securely
- ☐ Arrange the data connection you'll use locally (eSIM, SIM, Wi-Fi, etc.)
- ☐ Note down family contacts and emergency numbers
Just running through this list once makes it much clearer what you'll actually need on the ground, and that can take some of the worry away.
By situation: main options for keeping your home number active
There are a few different approaches to holding onto your number. Which one fits depends on your usage and how long you'll be away, so these are offered as general directions (always confirm specific availability and pricing with your provider's latest information).
1. Keep your current plan as-is
This is often considered for longer assignments or studies abroad, where you'll want the same number again after you return. There's a monthly cost, but it can let you keep both your number and SMS intact. Whether SMS works abroad depends on your plan and settings, so it's worth checking with your current carrier.
2. Look into lower-cost suspension or retention plans
Some carriers offer plans that let you hold onto your number while keeping costs down. However, whether SMS reception is included varies by offering, so it's essential to check in advance for cases like "the number stays active, but SMS can't be received."
3. Review the verification method itself
Depending on the institution or app, you may be able to choose an alternative identity check beyond SMS, such as a dedicated authenticator app. Confirming before you leave whether you can switch to or add such methods means you won't be entirely dependent on SMS. Availability differs by provider, so check the official guidance first.
What to consider when SMS codes "don't arrive"
Even with preparation, SMS codes sometimes don't come through abroad. Rather than panicking, work through points like these in order.
- Whether your home number's plan is still active (not cancelled or suspended)
- Whether overseas SMS reception is enabled on that plan
- Your device's power, signal status, and whether airplane mode is on or off
- Whether you're confusing SMS with notifications from apps that use data
- The possibility of a temporary delay on the sender's side (bank, brokerage, or card issuer)
If that still doesn't resolve it, the most reliable step is to contact your financial institution or app's support, or your carrier's official channels. Since the cause is often tied to your plan status, be careful not to cancel the number on your own judgment.
An important premise: travel eSIMs like Bloomy are "data-only"
This is a crucial point. Bloomy eSIM, like most eSIMs designed for travel and study abroad, is data-only by design. It doesn't come with a home phone number, and it can't receive your home-country SMS verification codes on its own. So the recommended approach is a division of roles: handle SMS verification on the side that keeps your home number active, and arrange your local internet through a data eSIM. If you need a phone number, SMS, or voice calls, look into other options such as a number-based plan as well. That said, communication through apps like WhatsApp can work wherever you have a usable data connection.
What Bloomy can do (preparing your local data connection)
If your thinking is "I'll keep my home number active, but I want to keep local data costs down," a travel eSIM is one option. Bloomy eSIM is designed so you can choose a plan to match your destination, data allowance, and number of days, making it easier to compare even if it's your first time. Prices and plan details can change, so please check the latest information shown before you buy.
To find a plan for your destination, the eSIM comparison page lets you choose by country, data allowance, and number of days. For the specifics of receiving SMS codes, see How to receive your home-country SMS verification codes abroad, and for other questions, our FAQ may help too.
Wrap-up: separate "number" and "data" before you leave
What's most worth doing before a move or studies abroad isn't complicated configuration—it's deciding in advance how you'll keep your home phone number and SMS. Plan to retain the number, confirm your verification methods, and arrange local data separately. Keep this division in mind and you're far less likely to get stuck on banking, brokerage, and credit card processes. Since number-retention terms, fees, and overseas SMS reception can change, do your final checks with each provider's official information. Work through the list step by step, and set yourself up to leave with peace of mind.
