Travel eSIMs have made international connectivity much easier. You land, turn on your eSIM, open Google Maps, message your family on WhatsApp and get on with your trip.
But there is one thing many travel eSIM comparisons still overlook:
What happens when you need an actual phone call or SMS?
Data-only eSIMs are great until a hotel asks you to call, a restaurant sends an SMS, a local business needs to speak to you, or you need a traditional phone number for verification.
That's where the SIMZY vs Saily comparison gets interesting.
Saily has recently moved beyond its traditional data-only proposition by introducing an optional US (+1) phone number that supports voice calls and SMS. SIMZY, meanwhile, offers travel eSIM plans that can include data, calling minutes and SMS, depending on the plan and destination.
So which one is better if calls and texts actually matter?
Why Calls and SMS Matter for Travel eSIMs
Most travelers can survive on data.
WhatsApp handles messaging. FaceTime handles video calls. Google Maps handles navigation. Uber and other apps handle transportation.
But data-only connectivity doesn't solve every situation.
You may still need to:
- Call a hotel or restaurant
- Contact a tour operator
- Call a local business
- Receive an SMS
- Send a traditional text
- Use a phone number for certain services
- Keep your personal number separate while traveling
- Make or receive calls when the other person isn't using WhatsApp
That's why the travel eSIM market is beginning to move beyond the “data only” model.
SIMZY's plan catalogue now includes filters for plans with SMS and calls, while Saily has introduced a dedicated US phone-number add-on for calls and texting.
SIMZY: Travel eSIMs That Can Include Calls and SMS
SIMZY's approach is closer to what travelers traditionally expect from a mobile plan.
Instead of making every eSIM data-only, SIMZY allows customers to filter its catalogue for plans that include SMS and calling minutes.
For example, SIMZY's Asia eSIM catalogue currently includes:
1 GB + 50 SMS + 50 minutes — 7 days — $7.50
alongside data-only options.
That distinction matters.
You're not necessarily adding a completely separate communications product to your travel eSIM. On compatible plans, the voice and messaging allowance is part of the connectivity package.
The important qualification is “compatible plans.”
SIMZY's plans vary by destination, region, duration and features, so travelers should check the individual plan before purchasing rather than assuming every SIMZY eSIM includes a phone number, calls and SMS.
Saily: The US-Number Add-On Changes the Comparison
Saily is the most interesting rival here because it has added something that traditional travel eSIM providers have generally avoided: a phone number.
Saily's optional phone-number service provides a real US-based +1 wireless number that works alongside the Saily data eSIM. It supports voice calls and SMS.
The phone number currently starts at US$0.99 per month, with separate call and text plans starting from US$0.99. Saily introduced this service in June 2026.
But Saily's Number Is a US Number
This is the detail travelers shouldn't overlook.
Saily doesn't give you a local phone number for whichever country you're visiting.
It gives you a:
+1 US number.
So if you're traveling through France, Italy, Thailand and Japan, you're not getting a French, Italian, Thai or Japanese number.
You're carrying a US number with you.
That can be a major advantage if you want a US number for:
- US-based services
- Business contacts
- Reservations
- Sign-ups
- Certain verification services
- Personal communication
Can You Make Real Phone Calls With Saily?
Yes, with the phone-number add-on and an appropriate calling plan.
Saily says its phone-number service supports incoming and outgoing voice calls in more than 130 countries.
There is, however, an important limitation:
Saily's phone-number plans support local calls, not international calls.
For travelers visiting multiple countries, Saily says its Global plan allows calling from supported countries without having to purchase a separate calling plan for every destination.
So Saily's calling proposition is useful—but you need to understand how the calling plan works before assuming it replaces a conventional international mobile plan.
SIMZY vs Saily: The Biggest Difference
The easiest way to understand this comparison is to look at what each company is trying to solve.
SIMZY SIMZY is moving toward a broader travel-connectivity model where travelers can select plans based on features such as:
Data → SMS → Calls → Duration → Destination
Its marketplace explicitly lets users filter for plans with SMS and calls.
Saily Saily starts with its travel data eSIM and lets you add a:
US phone number → Calls + SMS
The phone number is a separate add-on and is designed to remain available across your travel plans.
That means the two products aren't quite identical.
SIMZY is plan-centric.
Saily is number-centric.
And that's the most important difference in this matchup.
SIMZY vs Saily: Who Should Choose Which?
Choose SIMZY if you're looking for:
- Data plus traditional calls and SMS on supported plans
- A travel plan where voice/text allowances are clearly part of the package
- Local, regional or global plan options
- The ability to compare plans by features
- Flexible prepaid travel connectivity
SIMZY's current plan marketplace specifically supports filtering for plans with SMS and plans with calls, making it easier to identify travel packages that go beyond data.
Choose Saily if you're looking for:
- A travel data eSIM
- A dedicated US phone number
- Traditional calls and SMS through that number
- A persistent +1 number across trips
- Certain OTP/2FA use cases
- Data and phone-number management in one app
