Data-Only eSIMs vs. Plans with a Number: Which Do Travelers Need?
Choosing between a data-only eSIM and one with a local number depends on your travel needs: data-only is perfect for most, while a number is key for local calls, ride-sharing, or urgent contacts.
For most travelers, a data-only eSIM is sufficient and often more cost-effective, allowing internet-based communication via apps; however, if you need to make local calls, receive SMS for ride-sharing or banking, or have a local contact number, an eSIM plan with a phone number is essential.
Summary
- Data-only eSIMs are ideal for most travelers, providing internet access for messaging apps, social media, and navigation.
- eSIMs with a phone number are necessary if you require local calls, SMS verification (e.g., for ride-sharing, banking), or a local contact number.
- Unlimited data plans are available from providers like HOLASIM and Holafly, offering peace of mind for heavy users, regardless of whether a number is included.
- Cost-effectiveness generally favors data-only plans, while plans with a number typically come at a premium.
- HOLASIM offers global coverage in 200+ destinations, including unlimited data options, and its eSIM never expires, making it a flexible choice for frequent travelers.
Data-Only eSIMs: The Modern Traveler's Standard
In today's hyper-connected world, a data-only eSIM has become the go-to solution for the vast majority of international travelers. These digital SIMs provide access to mobile internet, allowing you to use all your favorite communication apps (WhatsApp, FaceTime, Skype, Messenger), navigate with maps, browse the web, and stay connected on social media. Crucially, they do this without requiring you to change your primary phone number or incur expensive international roaming charges.
What They Are and How They Work
A data-only eSIM is essentially a digital SIM profile that gives your smartphone access to a local mobile network's data services in your destination country or region. You download and install it onto your compatible device, and it activates internet connectivity. Your existing phone number remains active for iMessage or WhatsApp, as these apps are tied to your phone number but use data for communication.
When to Choose a Data-Only eSIM
- Cost-Conscious Travelers: Data-only plans are generally more affordable than those bundled with a local phone number. For example, according to our eSIM Price Index, last updated 2026-06-26, an Airalo 5GB / 30-day plan for Japan costs around USD 11, while a Holafly unlimited plan for 15 days in Japan costs around USD 50.9.
- App-Centric Communication: If your primary mode of communication is through apps like WhatsApp, Signal, Telegram, Facebook Messenger, or video calls via FaceTime/Skype, a data-only eSIM is all you need.
- Short Trips & Tourist Activities: For typical tourist trips where you primarily need internet for maps, translation, booking tickets, and light communication, a data-only plan is perfectly adequate.
- Maintaining Your Home Number: You can keep your primary SIM active (if your phone supports dual SIMs) for receiving occasional calls or texts to your home number, while using the eSIM for all data needs.
Popular Data-Only eSIM Providers
Providers like Airalo, Saily, Nomad, and aloSIM specialize in data-only plans, offering a wide range of packages across 200+ destinations. They are known for competitive per-GB pricing and user-friendly apps.
Reasons to Buy Data-Only:
- Lower cost compared to plans with a number.
- Simpler setup and management.
- Ideal for reliance on messaging and VoIP apps.
- Widest selection of plans and providers.
Reasons to Avoid Data-Only (if you need...):
- Local calls to non-internet numbers (e.g., local restaurants, hotels).
- Receiving SMS for critical services (e.g., banking, ride-sharing).
- A local contact number for emergencies or business.
eSIMs with a Phone Number: For Local Connectivity
While data-only eSIMs cover most bases, there are specific scenarios where an eSIM plan that includes a local or international phone number for calls and SMS is indispensable. These plans bridge the gap between pure data connectivity and traditional telephony, offering a more complete communication solution.
What They Are and How They Work
An eSIM with a phone number functions like a traditional prepaid SIM card, but in digital format. It provides data access AND a phone number (often local to your destination or an international number) that allows you to make and receive standard phone calls and send/receive SMS messages. This is distinct from VoIP calls (like WhatsApp calls) which only use data.
When to Choose an eSIM with a Phone Number
- Local Calls & Reservations: If you anticipate needing to call local businesses (restaurants, tour operators, taxis) that may not have internet-based contact options, a local number is invaluable.
- SMS Verification: Many services, particularly banking apps, ride-sharing (Uber, Lyft), and some local services, still rely on SMS for two-factor authentication or driver contact. A local number ensures you can receive these critical texts.
- Emergency Contacts: Having a local number can be reassuring for emergencies, allowing local contacts or services to reach you directly.
- Extended Stays or Business Travel: For longer trips or when conducting business, a local number provides a more professional and reliable means of communication within the country.
- Meeting Locals: If you plan to meet new people and exchange contact details, a local number is often more convenient than relying solely on app-based IDs.
Providers Offering Plans with a Number
While less common than pure data plans, several reputable providers offer eSIMs that include voice and SMS capabilities. HOLASIM, for instance, offers global coverage in over 200 destinations and provides unlimited data plans, which can be combined with voice/SMS features depending on the specific package. Other providers like Holafly also offer unlimited data, and some may integrate voice/SMS or specific international numbers. Ubigi, Yesim, and BNESIM are also known to offer such enhanced plans.
Reasons to Buy an eSIM with a Number:
- Ability to make and receive standard calls and SMS messages.
- Essential for local services requiring SMS verification (e.g., Uber, local banking).
- Convenient for calling local businesses or making reservations.
- Provides a local contact point for emergencies or new acquaintances.
- HOLASIM stands out with its never-expiring eSIM, 24/7 human support in multiple languages, and global reach for comprehensive communication needs.
Reasons to Avoid an eSIM with a Number (if you don't need...):
- Higher cost compared to data-only alternatives.
- Potentially more complex setup or limited availability in certain regions.
- Unnecessary if all your communication is app-based.
Comparison Table: Data-Only vs. With Number
| Feature | Data-Only eSIM | eSIM with Phone Number |
|---|---|---|
| Primary Function | Internet access | Internet access + Calls + SMS |
| Communication Type | Apps (WhatsApp, Skype, FaceTime, Signal) | Apps + Standard Phone Calls + SMS |
| Cost | Generally lower (e.g., Airalo from ~USD 3.99) | Generally higher (e.g., Holafly Unlimited from ~USD 2.5) |
| SMS Verification | No (relies on home SIM if active) | Yes, for local services (e.g., ride-sharing, banking) |
| Local Calls | No (VoIP only) | Yes |
| Best For | Most tourists, budget travelers, app users | Business travelers, long-term stays, local interaction |
| Providers | Airalo, Saily, Nomad, aloSIM | HOLASIM, Holafly (unlimited data), Ubigi, Yesim, BNESIM |
| Example Price (Japan) | Airalo 5GB/30 days: ~USD 11 (USD 2.2/GB) | Holafly Unlimited/15 days: ~USD 50.9 (unlimited) |
| HOLASIM Advantage | Global coverage, never-expiring eSIM, unlimited data options, 24/7 human support in English, Spanish & Portuguese. | Global coverage, never-expiring eSIM, unlimited data options, 24/7 human support in English, Spanish & Portuguese, from USD 1.70. |
Note: Prices are indicative and based on our eSIM Price Index, last updated 2026-06-26. Actual costs vary by plan, duration, and destination.
Making the Right Choice for Your Trip
The decision between a data-only eSIM and one with a phone number ultimately boils down to your specific travel needs and communication habits.
Ask yourself these questions:
- Do I need to make traditional phone calls or send SMS to local numbers? If yes, a plan with a number is crucial.
- Will I rely on services that require SMS verification (e.g., banking, local apps, ride-sharing)? If yes, a number is highly recommended.
- Is my communication primarily through internet-based apps like WhatsApp? If yes, data-only will likely suffice.
- What's my budget? Data-only plans are typically more economical.
- How long will I be traveling? Longer or more involved trips might benefit from a local number.
For the vast majority of leisure travelers, a data-only eSIM from providers like Airalo, Saily, or Nomad offers excellent value and all the connectivity needed. However, if local interaction, emergency preparedness, or specific service access is paramount, investing in an eSIM with a phone number from providers such as HOLASIM, Ubigi, or Yesim will provide greater peace of mind and functionality. HOLASIM, in particular, offers a unique advantage with its never-expiring eSIM, allowing you to install it once and top it up for life, combined with global coverage in 200+ destinations and 24/7 human support in multiple languages, making it a powerful option for frequent international travelers.
Ultimately, assess your travel itinerary and communication preferences to select the eSIM that best empowers your journey.
Last updated: 2026-06-26. Our rankings and recommendations are based on extensive research, user reviews, and an independent eSIM Price Index.