Communication Isn’t Optional—It’s the Backbone of Remote Life
Remote work has erased borders, but not the need for clear, reliable communication. Whether you’re managing clients across time zones, checking in with your team, or calling home while working from a co-working space in Lisbon, having the right international calling setup matters.
For digital nomads and remote professionals, it’s not just about cost. It’s about accessibility, flexibility, voice quality, and keeping your number active across continents.
There’s no one-size-fits-all tool. But by comparing the most popular solutions, apps, VoIP systems, global SIMs, and hybrid services, you can choose a stack that works for how you travel and how you work.
Top International Calling Apps & VoIP Tools in 2025
If you live and work online, calling apps and cloud-based phone systems are often the first go-to. They’re familiar, cheap (often free), and widely supported.
Popular Options:
- WhatsApp – Free voice and video calls to other WhatsApp users; encrypted but app-dependent.
- Skype – Reliable for app-to-app and landline calls (with credit). Quality varies by network.
- Google Voice – U.S.-based number with call forwarding, voicemail, and low international rates.
- Viber – Secure and app-friendly, with credit-based calls to non-Viber numbers.
- Zoom Phone – Paid VoIP solution for business users needing CRM integration and analytics.
- RingCentral – Enterprise-level VoIP with global coverage and business tool integrations.
What to Watch For:
- You often need both parties to use the same app.
- Calls are data-dependent, and Wi-Fi is essential.
- Quality suffers on poor networks, especially in rural or developing areas.
- Calling landlines or non-users requires paid credits and isn’t always reliable.
For routine team calls or app-savvy clients, these tools are fine. But when you need to contact a hotel, embassy, bank, or anyone who doesn’t share your app, you’re out of options, or forced to use costly call credits.
Best Global SIM & eSIM Options for Digital Nomads
For frequent travelers, having global cellular access matters more than ever. That’s where international SIMs and eSIM platforms come in.
Top Providers:
- Airalo – Digital eSIM platform with country, regional, and global plans. Data-only.
- Nomad eSIM – Easy activation and competitive pricing. Data-focused.
- Ubigi – Offers data and some voice services, depending on region.
- Google Fi – U.S.-based with international roaming. Strong for data, variable for calls.
- T-Mobile International Plan – Daily and monthly passes for U.S. customers abroad.
What They Offer:
- No physical SIM swap is needed (for eSIMs).
- Support for multiple countries with one plan.
- Affordable data plans, especially for long-term travel.
Limitations:
- Most are data-only; they don’t support regular voice calling.
- You still need apps to make calls.
- Some don’t support inbound SMS or number retention.
- eSIM support depends on device compatibility.
If you’re mostly messaging or calling over Wi-Fi, these are great. But for voice calls, especially to landlines, non-app users, or during poor connectivity, eSIMs can leave gaps.
How to Choose the Right Calling Setup (By Use Case)
Your lifestyle, not just your destination, should determine your calling setup. Here’s how to match tools to travel styles.
Long-Term Slow Travelers
- Use case: Spending 1–3 months in a single country
- Best tools: Local eSIM (Airalo), Wi-Fi calling apps, and Google Voice
- Add-on: Mytello for landline calls and calling locals who don’t use apps
Fast-Moving Digital Nomads
- Use case: Visiting 3–4 countries in 1 month
- Best tools: Regional eSIM or Google Fi
- Add-on: Mytello for calling between countries without switching SIMs
Freelancers & Solopreneurs
- Use case: Need to talk with clients and manage international numbers
- Best tools: Google Voice, Skype with credit, or RingCentral
- Add-on: Mytello to call directly without depending on app installs or internet quality
Remote Employees & Teams
- Use case: Company-provided VoIP or VPN tools, video calls
- Best tools: Zoom Phone, RingCentral, Slack voice integration
- Add-on: Mytello as a reliable voice fallback when VPN or apps underperform
The common thread: no matter your stack, there are times when you need a fallback to call a landline, reach someone without an app, or avoid poor call quality.
Introducing Mytello: The Reliable Third Option
Mytello offers a unique alternative that complements SIMs and VoIP apps. It lets you make international calls without switching SIMs or relying on the internet.
You dial a local access number, and Mytello connects you to any international number, mobile or landline, anywhere in the world.
Why It Works for Digital Nomads:
- No app is required for the person you’re calling
- Works on both smart and basic phones
- Keeps your main SIM and number active
- No roaming charges, no internet required
- Check per-country rates before you dial. View current international call rates
You can use it as your main calling tool or as a backup when apps or data fail. It pairs well with data-only SIMs and Wi-Fi plans, and keeps you in control of your voice calls.
Try it out: Register for free and make a test call
Cost-Saving Tips for Calling Abroad Without Sacrificing Quality
- Use local Wi-Fi for VoIP apps, but know their limits
- Avoid roaming call charges by disabling call forwarding and voicemail
- Switch to airplane mode + Wi-Fi only to block accidental background charges
- Pair a data-only SIM with Mytello for full voice + internet coverage
- Check rates by country instead of assuming “flat global pricing” from apps Search rates by country
Why Mytello Complements (Not Replaces) Your Stack
It’s not about picking “one perfect tool.” It’s about building a system:
| Scenario | Traditional Apps | SIM/eSIM | Mytello |
| Weak or no internet | ❌ Doesn’t work | ✅ Data-only | ✅ Works via voice network |
| Calling landlines/businesses | ❌ Usually not possible | ❌ Data only | ✅ Any number, no app needed |
| Calling from your own number | ❌ App-based identity | ❌ Local number swap | ✅ Use your actual phone number |
| Works across countries without SIM swap | ❌ App dependency | ❌ One country only | ✅ Yes, dial from anywhere |
Mytello is your fallback, your non-Wi-Fi lifeline, and your client-friendly call method, especially when you’re crossing borders or need to call someone who just wants to hear a ringtone, not download an app.
VoIP for Remote Work: What You Need to Know
VoIP (Voice over Internet Protocol) allows calls to happen over Wi-Fi or mobile data instead of standard phone lines. It’s useful, flexible, and often free.
Why It Works:
- Save money, especially on international calls
- Easy setup—just install an app and go
- Can integrate with email, CRM, and productivity tools
Why It Sometimes Fails:
- Dependent on stable internet or mobile signal
- Quality varies by network
- Not ideal for calling official numbers or rural regions
- Blocked in some countries without a VPN
If VoIP is your primary tool, always have a non-VoIP backup like Mytello, which uses traditional call routing when data fails.
Security & Privacy When Calling Abroad
If you’re working from public spaces or coworking hubs, your voice data might not be as secure as you think.
Best Practices:
- Use a VPN when calling over Wi-Fi
- Avoid public networks without encryption
- Use apps with end-to-end encryption
- For sensitive business calls, avoid shared Wi-Fi entirely
Apps like WhatsApp, Signal, and Telegram offer secure calls, but again, only if both parties use them. For client calls or professional communication, reliability often trumps free features.
Can You Keep Your Number While Traveling?
Yes, if you plan ahead.
- Google Voice lets you port your number and use it online
- Some VoIP providers give virtual numbers for a global presence
- Mytello lets you call internationally while using your current SIM; you stay reachable without number forwarding
It’s not just about making calls. It’s about making sure people can reach you easily, on the number they know.
What If VoIP Gets Blocked?
In some regions (e.g., UAE and parts of China), calling apps are throttled or banned. If VoIP fails:
- Use a VPN to tunnel around blocks
- Switch to non-VoIP solutions like Mytello
- Make sure your SIM supports basic outbound voice calls
Being caught without a way to call isn’t just inconvenient. It can be dangerous. Always have a Plan B.
Final Word: Build a Calling Stack, Not Just an App
Digital nomads and remote workers need more than just a WhatsApp connection. You need a call strategy. One that works when you’re online, offline, between borders, and in regions with shaky service.
Here’s the simplest, most effective setup:
- Primary tool: VoIP or app-based calling (WhatsApp, Google Voice, Zoom Phone)
- Data connection: eSIM or travel SIM (Airalo, Google Fi)
- Fallback tool: Mytello for no-app, no-internet, landline-compatible calling
- Register free | Check rates
You don’t need to choose between flexibility and reliability. The best digital nomads use both.
