If you are planning an international trip, you may have heard the term data-only eSIM. But what exactly does it mean, and how does it work?

A data-only eSIM is an eSIM plan that primarily provides mobile internet connectivity rather than a traditional mobile phone number for voice calls and SMS.

For travelers, a data-only eSIM can be a convenient way to stay connected to the internet while using apps such as WhatsApp, Google Maps, Google Translate, email, social media, ride-hailing apps, and travel booking platforms.

eSIMLLY provides travel eSIM data plans across 160+ countries, allowing travelers to purchase a plan for their destination, install it digitally, and use mobile data without needing to buy a physical SIM card.

Explore eSIMLLY travel eSIM plans

What Does "Data-Only eSIM" Mean?

A data-only eSIM provides mobile data rather than functioning like a traditional mobile SIM with a standard phone number for cellular voice calls and SMS.

Think of it as a digital connection to a mobile data network.

With a data-only travel eSIM, you can use your phone's internet connection for activities such as:

• Browsing websites

• Using Google Maps

• Sending WhatsApp messages

• Using social media

• Checking email

• Making internet-based calls

• Booking hotels and flights

• Using ride-hailing applications

• Streaming music

• Making video calls

• Using translation applications

The exact services available depend on the individual plan.

eSIMLLY's terms explain that its standard service is primarily a mobile data service, and voice/SMS are not included unless a particular plan specifically states otherwise.

How Does a Data-Only eSIM Work?

A data-only eSIM works in much the same way as other eSIMs from a technical perspective.

Instead of inserting a physical SIM card into your smartphone, you download a digital SIM profile to your device.

The general process is:

1. Choose your eSIMLLY destination.

2. Select a data plan.

3. Purchase the plan.

4. Receive your eSIM activation information.

5. Install the eSIM on your compatible phone.

6. Select the eSIM for mobile data.

7. Connect to the supported mobile network when you arrive.

8. Use your allocated mobile data during the plan's validity period.

There is no need to physically insert or remove a SIM card.

See the eSIMLLY installation guide

Does a Data-Only eSIM Have a Phone Number?

A standard data-only eSIM generally does not provide a traditional phone number for cellular voice calls and SMS.

Instead, the eSIM is designed primarily for internet connectivity.

This does not mean you cannot communicate with people.

You can still use internet-based communication services such as:

• WhatsApp

• Telegram

• FaceTime

• Messenger

• Instagram

• Email

• Other internet-based calling and messaging applications

As long as you have an internet connection, these applications can continue working.

Can I Make Phone Calls With a Data-Only eSIM?

You can make internet-based calls using applications that work over mobile data.

For example, you can use WhatsApp to make a voice call to another WhatsApp user while connected through your eSIMLLY data plan.

Similarly, you can use FaceTime, Messenger, Telegram, or other internet calling applications where supported.

However, a data-only eSIM should not automatically be assumed to provide traditional cellular voice calling.

If you need regular cellular voice or SMS services, check the specific plan details before purchasing.

Can I Send SMS With a Data-Only eSIM?

A standard data-only eSIM does not generally provide traditional SMS messaging.

However, messaging applications that use internet data can still work.

For example, you can send messages through:

• WhatsApp

• Telegram

• Messenger

• Instagram

• iMessage when configured appropriately

• Other internet-based messaging services

This is one reason data-only eSIMs can be useful for international travelers.

Why Do Travelers Use Data-Only eSIMs?

Travelers often need mobile internet more than they need a new local phone number.

Think about what you actually use your smartphone for when travelling.

You may need it for:

Navigation

Google Maps and other navigation applications can help you find hotels, restaurants, attractions, airports, train stations, and other locations.

Communication

WhatsApp and other internet-based messaging applications allow you to stay in contact with family, friends, colleagues, and travel partners.

Travel bookings

You can access airline tickets, hotel reservations, transportation apps, and travel confirmations.

Translation

Online translation applications can be particularly useful when visiting a country where you don't speak the local language.

Social media

You can upload photos, check messages, and stay connected with your social networks.

A data-only eSIM can provide the mobile internet connection required for these activities.

Data-Only eSIM vs Physical SIM

The biggest difference is how the service is delivered.

A data-only eSIM is particularly convenient when you want mobile internet while keeping your existing physical SIM in the phone.

Can I Keep My Regular SIM While Using eSIMLLY?

Yes, on compatible dual-SIM devices.

This is one of the useful features of using an eSIM for travel.

You can potentially configure:

Your regular SIM → calls, SMS, and your existing number

eSIMLLY → mobile data while travelling

This means you don't necessarily have to remove your primary SIM card before travelling.

However, the exact configuration depends on your smartphone and carrier.

You should also check your phone's settings to make sure your primary SIM does not accidentally use expensive international roaming data.

What Can You Do With an eSIMLLY Data-Only eSIM?

A data-only eSIM can support many of the activities travelers perform every day.

Use Google Maps

Navigation is one of the most common reasons travelers need mobile data.

You can use mobile data to search for:

• Hotels

• Restaurants

• Tourist attractions

• Train stations

• Airports

• Public transportation

• Directions

Use WhatsApp

You can send messages, share photos, send voice messages, and make internet-based calls through WhatsApp.

Use Social Media

You can stay connected to your social networks while travelling.

Check Emails

For business travelers, having mobile data allows you to check and respond to emails even when Wi-Fi isn't available.

Book Transportation

Mobile data can be useful for accessing taxi and ride-hailing applications.

Access Travel Information

You can check flight information, hotel bookings, maps, opening hours, weather information, and other travel details.

Where Can You Use an eSIMLLY Data-Only eSIM?

eSIMLLY currently provides travel eSIM coverage across 160+ countries.

This includes destinations across:

Asia

• Japan

• Singapore

• Thailand

• Indonesia

• South Korea

• China

• India

• And other Asian destinations

Europe

• France

• Germany

• Italy

• Spain

• United Kingdom

• And other European destinations

North America

• United States

• Canada

• Mexico

South America

• Brazil

• And other destinations across the region

Middle East

• United Arab Emirates

• Türkiye

• And other destinations

Africa

eSIMLLY also provides coverage across multiple African destinations.

Oceania

• Australia

• And other destinations across the region

Available plans, networks, data allowances, and validity periods vary by destination.

What Data Plans Does eSIMLLY Offer?

eSIMLLY provides different data allowances and validity periods depending on the destination.

For example, some destination plans include options such as:

• 1 GB

• 2 GB

• 3 GB

• 5 GB

• 10 GB

• 20 GB

Validity can include options such as:

• 7 days

• 15 days

• 30 days

This gives travelers flexibility to select a plan according to their trip.

For example, someone visiting Singapore for a short holiday may not need the same amount of data as someone spending a month travelling around Japan.

Example: eSIMLLY Japan Data-Only Plans

For Japan, eSIMLLY currently lists several options.

Examples include:

This means you can select a smaller plan for lighter usage or a larger plan if you expect to use more mobile data.

Check eSIMLLY Japan plans

Example: eSIMLLY Singapore Data-Only Plans

Singapore is another destination where eSIMLLY provides multiple data options.

Current examples include:

Check eSIMLLY Singapore plans

Example: eSIMLLY France Data-Only Plans

France plans include different combinations of data and validity.

Examples include:

• 1 GB / 7 days

• 2 GB / 15 days

• 3 GB / 15 days

• 5 GB / 15 days

• 10 GB / 15 days

• 10 GB / 30 days

• 20 GB / 30 days

Check eSIMLLY France plans

Is a Data-Only eSIM Good for International Travel?

For travelers who primarily need internet access, a data-only eSIM can be a practical option.

Instead of purchasing a physical SIM after landing, you can prepare your eSIM before your trip.

With eSIMLLY, you can select a destination plan, install it digitally, and use the plan for mobile data while travelling.

This can be particularly useful for:

• Tourists

• Business travelers

• Backpackers

• Digital nomads

• Students travelling abroad

• Families on vacation

• Short-term international travelers

How Much Data Do You Need?

Your ideal data allowance depends on how you use your phone.

Light usage

You may need a smaller plan if you mainly use:

• WhatsApp

• Maps

• Email

• Occasional browsing

• Travel apps

Moderate usage

You may want a medium-sized plan if you regularly use:

• Social media

• Maps

• Music streaming

• Video calls

• Browsing

Heavy usage

A larger plan may be appropriate if you frequently use:

• Video streaming

• Video calls

• Social media

• Cloud services

• Remote work

• Hotspot where supported

Instead of automatically purchasing the largest plan, consider your expected daily usage and access to Wi-Fi.

Can a Data-Only eSIM Be Used for Hotspot?

Hotspot functionality depends on the specific eSIM plan and device.

Some eSIMLLY plans support hotspot/tethering.

If you need to share your mobile data with a laptop, tablet, or another phone, check the specific plan details before purchasing.

This can be especially useful for business travelers who need internet access on a laptop while away from hotel or office Wi-Fi.

Can You Use a Data-Only eSIM on an iPhone?

Compatible iPhones can use eSIM technology.

Depending on the iPhone model and region, you may be able to install an eSIM and configure it as your mobile-data line.

Before purchasing, check whether your particular iPhone supports eSIM and whether it is carrier-unlocked where required.

You can use the eSIMLLY compatibility checker to verify supported devices.

Check eSIM compatibility with eSIMLLY

Can You Use a Data-Only eSIM on Samsung?

Many newer Samsung Galaxy devices support eSIM, although availability can depend on the exact model and market.

If you have a Samsung phone, check the model's eSIM compatibility before purchasing.

eSIMLLY provides compatibility information and installation guidance for supported Samsung devices.

Can You Use a Data-Only eSIM on Google Pixel?

Many Google Pixel models support eSIM.

However, compatibility can vary by model, region, and carrier configuration.

Always check your specific device before purchasing an eSIM plan.

How Do You Install an eSIMLLY Data-Only eSIM?

The installation process is digital.

Generally, you:

1. Purchase your eSIMLLY plan.

2. Receive your activation information.

3. Open your phone's SIM or mobile-network settings.

4. Select Add eSIM.

5. Scan the provided QR code or enter the activation details.

6. Complete the installation.

7. Select the eSIM as your mobile-data line.

8. Follow the plan-specific activation instructions.

It is often convenient to install the eSIM before leaving home while you still have reliable Wi-Fi.

Follow the eSIMLLY installation guide

Does a Data-Only eSIM Replace Your Normal SIM?

Not necessarily.

An eSIM can exist alongside a physical SIM on compatible devices.

This means you can potentially keep your existing SIM and add eSIMLLY as a separate mobile-data line.

For international travel, this can provide a convenient setup:

Primary SIM: Your existing number

eSIMLLY: Travel data

You can then select which line should be used for mobile data through your phone settings.

Is a Data-Only eSIM Different From a Regular eSIM?

Technically, an eSIM refers to the digital SIM technology itself.

"Data-only" describes the service provided through that eSIM.

An eSIM can potentially support different types of services depending on the plan and carrier.

A data-only travel eSIM is specifically designed primarily for mobile internet access.

So when you purchase a data-only eSIM from eSIMLLY, you are primarily purchasing a mobile data service for travel.

What Are the Main Benefits of a Data-Only Travel eSIM?

A data-only eSIM can provide several practical benefits for international travelers.

No physical SIM card

You don't have to carry or replace a tiny physical SIM card.

Digital activation

Your eSIM can be delivered digitally.

Convenient international connectivity

You can prepare your mobile data before travelling.

Keep your existing SIM

Compatible dual-SIM phones can allow you to retain your existing SIM while using the eSIM for data.

Flexible data plans

eSIMLLY offers different data allowances and validity periods depending on the destination.

International coverage

eSIMLLY provides travel eSIM coverage across 160+ countries.

Easy destination selection

You can select a plan based on where you are travelling rather than buying a physical SIM at the airport.

Who Should Use a Data-Only eSIM?

A data-only travel eSIM can be particularly useful if you:

• Travel internationally frequently

• Want to avoid physical SIM cards

• Mainly communicate through internet apps

• Need mobile navigation

• Work remotely while travelling

• Want mobile data immediately after landing

• Want to keep your existing SIM installed

• Prefer prepaid travel connectivity

For many travelers, mobile data is the most important part of staying connected abroad.

eSIMLLY Data-Only eSIM for International Travel

eSIMLLY provides travel eSIM plans across 160+ countries, making it possible to stay connected across a wide range of international destinations.

You can choose plans based on:

• Country

• Data allowance

• Validity period

• Trip duration

• Expected usage

Whether you're visiting Japan, Singapore, France, Germany, Thailand, Indonesia, South Korea, Mexico, the United States, Italy, Spain, Australia, Canada, the UAE, or another supported destination, you can check the available eSIMLLY plan for your trip.

The available data packages and prices vary by destination.

Frequently Asked Questions

What is a data-only eSIM?

A data-only eSIM is a digital SIM service designed primarily to provide mobile internet access. It generally does not include a traditional cellular phone number for voice calls and SMS.

Does a data-only eSIM work with WhatsApp?

Yes. WhatsApp uses internet data, so it can work over a data-only eSIM when your phone has an active data connection.

Can I use Google Maps with a data-only eSIM?

Yes. Google Maps and other navigation applications can use mobile data provided by a compatible travel eSIM.

Can I receive calls on my normal number?

If your regular SIM remains active and your carrier supports the required roaming/service configuration, you may continue receiving calls through your existing line. Carrier charges may apply.

Can I keep my physical SIM with eSIMLLY?

Yes, on compatible dual-SIM devices. You can potentially keep your physical SIM installed and use eSIMLLY as your travel data line.

Does eSIMLLY provide voice calls?

eSIMLLY's standard service is primarily a mobile data service. Voice and SMS are not included unless specifically stated for a particular plan.

How many countries does eSIMLLY cover?

eSIMLLY currently provides travel eSIM coverage across 160+ countries.

Can I use a data-only eSIM for work?

Yes. You can use the mobile data connection for email, web applications, video meetings, cloud services, messaging, and other internet-based work. Hotspot availability depends on the specific plan.

Can I use a data-only eSIM for a long trip?

Yes. eSIMLLY offers different validity periods depending on the destination, including plans with longer validity such as 30 days in many destinations.

Final Thoughts

A data-only eSIM is a convenient way to get mobile internet while travelling internationally without relying on a physical SIM card.

Instead of focusing on a traditional phone number, the service focuses on what many travelers need most: reliable mobile data.

With eSIMLLY, you can choose from travel eSIM plans covering 160+ countries, with different data allowances and validity periods depending on your destination.

Whether you need a small amount of data for maps and messaging or a larger package for social media, streaming, and remote work, you can choose an eSIMLLY plan according to your travel requirements.

Choose your destination, select your data plan, install your eSIM, and stay connected wherever your journey takes you.

Explore eSIMLLY data-only travel eSIM plans