If you’re wondering should you remove your primary eSIM when traveling, the short answer is no. Deleting it can create unnecessary headaches when you return home. Most travelers aren’t worried about the tech — they’re worried about losing their number, missing bank codes, or getting hit with roaming charges.

Here's the reality: you almost never need to remove your primary eSIM. Simply turning it off is enough to avoid roaming fees while keeping your number safe.

This guide explains what actually happens when you remove vs disable your eSIM, how dual eSIM works on modern phones, and when you should keep your primary line on during international trips.

Short Answer: You Should NOT Remove Your Primary eSIM

No — you should not remove your primary eSIM before traveling internationally.

Removing an eSIM deletes the carrier profile from your phone. That means when you return home, you may need to contact your carrier, scan a new QR code, or go through reactivation steps. It’s unnecessary friction.

What most travelers actually want is to:

• Avoid roaming charges

• Keep access to banking OTP codes

• Stay reachable on their main number

• Use a travel data plan abroad

You can do all of that without deleting anything.

The simple rule:

• ✅ Turn off your primary line if you want to prevent roaming

• ❌ Do not remove it unless your carrier specifically instructs you

Modern iPhones and Android devices are built to handle multiple eSIM profiles. Deleting your home number before a trip usually creates more problems than it solves.

Removing vs Turning Off Your Primary eSIM

This is where confusion usually happens.

Removing and turning off are not the same thing.

• Removing = deleting the eSIM profile from your device

• Turning off = temporarily disabling that line in settings

Here’s the difference in practical terms:

Action	What Happens	Risk Level	Recommendation
Turn Off	Line is paused, number stays on device	Low	✅ Recommended
Remove	eSIM profile deleted from phone	Medium–High	❌ Not recommended

When you turn off your primary line:

• Your number stays linked to your carrier

• You can turn it back on instantly

• No reinstallation required

When you remove it:

• The eSIM profile disappears

• You may need carrier support to restore it

• Some carriers will ask you to verify your identity before restoring it

Unless you’re switching carriers permanently, deleting your primary eSIM before a short trip makes little sense.

Can You Use a Travel eSIM and Your Primary eSIM Together?

Yes — and this is how most experienced travelers do it.

Most modern iPhones (XS and newer) and many Android devices support dual SIM functionality, including dual eSIM. That means:

• One line can handle calls and SMS

• The other line can handle mobile data

Typical travel setup:

• Primary eSIM → Calls & SMS

• Travel eSIM → Mobile data

• Primary data roaming → Turned OFF

• Travel data → Set as default data line

On iPhone, you can choose:

• Default voice line

• Default data line

• Whether mobile data switching is enabled

On Android, similar options exist under SIM or Network settings.

This setup lets you:

• Receive banking verification texts

• Keep WhatsApp tied to your main number

• Avoid expensive roaming data

You don’t need to remove anything to make this work.

When Should You Keep It On vs Turn It Off?

 Keep Your Primary eSIM ON if:

1. You need SMS verification codes (banking, work logins).

2. Your company may call your main number.

3. You rely on your number for emergency contacts.

4. Your carrier offers affordable roaming add-ons.

Just remember: turn off data roaming for that line to avoid surprise charges.

 Turn Your Primary eSIM OFF if:

1. You want zero chance of roaming fees.

2. You won’t need SMS verification.

3. You’re traveling long-term and using a local number.

4. Your phone only allows one active eSIM at a time.

If the line is off, you won’t receive calls or SMS. Wi‑Fi does not replace SMS tied to your carrier number.

Common Mistakes Travelers Make

Even frequent flyers make these mistakes:

1. Deleting Instead of Disabling

They delete the eSIM thinking it stops roaming charges — but it doesn't. Turning off data roaming is all you need.

2. Forgetting About OTP Codes

Many banking apps still rely on SMS authentication. If your line is off, you won’t receive those codes.

3. Testing Only After Landing

Always configure and test your setup before departure while you still have stable service.

4. Assuming Wi‑Fi Solves Everything

Wi‑Fi calling works in some situations, but SMS messages — including verification codes — still require your carrier line to be active.

A five-minute settings check before flying prevents hours of frustration later.

What Happens When You Return Home?

If you kept your primary eSIM installed, returning home is simple:

• Turn the line back on (if you disabled it)

• Set it as your default data line

• Turn off or remove the travel eSIM if no longer needed

In most cases, your phone reconnects automatically within seconds.

You would only need to contact your carrier if:

• You deleted the eSIM profile

• Your carrier deactivated the line

• You switched to a different carrier or plan while traveling

Keeping the profile installed avoids nearly all of this.

Where a Travel eSIM Fits

A travel eSIM works best as a dedicated data line — separate from your home number, active only when you need it abroad.

Instead of swapping physical SIM cards, you:

• Keep your home number installed

• Use the travel eSIM for data

• Control roaming through settings

This setup minimizes risk and keeps your communication stable across borders.

Final Verdict

You should not remove your primary eSIM when traveling. Deleting it creates unnecessary complications and offers no real benefit for most trips.

If you want to avoid roaming charges, simply turn off the line or disable data roaming. If you need banking codes or important calls, keep it active and adjust your settings carefully.

Modern phones are designed for dual eSIM use. The safest approach is simple: keep your primary line installed, configure it properly, and test everything before departure.

Before your next flight, take two minutes to review your cellular settings — it’s the easiest way to travel connected without stress.

Frequently Asked Questions

Should I remove my primary eSIM when traveling abroad?

No, you should not remove your primary eSIM. Removing it deletes the profile from your device, causing hassle to reactivate. It's far better to simply turn it off in your phone's settings to avoid roaming charges while keeping it readily available.

What's the difference between removing and turning off an eSIM?

Turning off an eSIM temporarily disables it, like switching off a physical SIM. Your profile remains on your device, allowing easy reactivation. Removing an eSIM means deleting its profile entirely, requiring re-installation and potential contact with your carrier upon return.

Can I use my primary eSIM and a travel eSIM at the same time?

Yes, most modern smartphones support dual eSIMs. You can keep your primary eSIM active for calls and texts (with roaming off) while using a separate travel eSIM for data, ensuring you stay connected without incurring high roaming fees.

Will I lose my phone number if I turn off my primary eSIM?

No, turning off your primary eSIM does not delete your phone number or your account. Your number remains linked to your carrier. You can simply re-enable the eSIM in your phone's settings whenever you need to use it again, whether abroad or back home.

Can I still receive SMS verification codes with my primary eSIM turned off?

No, if your primary eSIM is turned off, you will not receive any calls or SMS messages, including important verification codes or banking alerts. Consider using authenticator apps or keeping your primary line active without data roaming if critical.

How much data do I need for international travel with a travel eSIM?

Data needs vary, but for light use (maps, messaging), 1-2GB per week is often sufficient. Moderate users (social media, streaming) might need 3-5GB weekly. Heavy users (video calls, large uploads) should consider 7-10GB or more per week.

What happens if my travel eSIM runs out of data?

Most travel eSIM providers allow you to purchase top-ups directly in their app. Bitjoy, for example, lets you add data in minutes without reinstalling anything. Your existing eSIM profile remains active, making it simple to add more data without needing a new installation.

Read more: 

eSIM Expense Management for Corporate Travel: Control Roaming Costs

How to Receive Bank SMS 2FA Abroad With an eSIM: Easy Guide