--- title: 'Viber vs Signal: Which Is Better for International Calls in 2026?' description: >- Viber Out charges up to $0.46/min to the Philippines. Signal can't call real numbers at all. Here's what to use instead for cheap international calls in 2026. category: comparisons author: GlobCall Team publishedAt: '2026-09-03T23:53:45.183Z' updatedAt: '2026-09-03T23:53:45.183Z' readingTime: 10 --- Both Viber and Signal are free to download, but "free" means very different things depending on what you're actually trying to do. Viber Out charges per-minute rates to reach real phone numbers — Signal doesn't offer that feature at all. In 2026, with Skype gone and millions of users looking for reliable international calling alternatives, the Viber vs. Signal question comes up constantly. This article breaks down exactly what each app does, where each one falls short, and what to use instead when neither fits your needs. > **Key Takeaways:** > - Signal has zero support for calling regular phone numbers — it's app-to-app only, making it useless for reaching landlines or non-Signal users abroad. > - Viber Out lets you call any phone number internationally, but rates vary wildly: Philippines calls run $0.46/min through some services, which adds up fast on a 20-minute call. > - If you need to call real international numbers cheaply and without an app install, browser-based VoIP services like GlobCall start at $0.02/min to the USA and Canada — no seat fees, no downloads. --- ## Signal Is Not Built for International Calls to Real Numbers Signal supports voice calls to exactly zero regular phone numbers. Every call made through Signal requires both parties to have the app installed and an active internet connection. It's an encrypted messaging and calling platform, not a phone replacement. For pure privacy between two app users, it's excellent. For calling your supplier in Manila or your aunt's landline in Germany, it doesn't work. A lot of people assume "free calling app" means you can call anyone. Signal's call quality is genuinely good — low latency, end-to-end encrypted, no ads, no data harvesting. But the recipient must be on Signal. That single constraint rules it out for most international calling scenarios where you're reaching businesses, landlines, or people who haven't downloaded anything. So if your question is "Signal vs. Viber for calling real international numbers," Viber wins by default — but that doesn't make it the right choice either. --- ## What Viber Out Actually Costs (And Where It Gets Expensive) Viber-to-Viber calls are free. The moment you want to call a regular phone number — mobile or landline — you're using Viber Out, which runs on credits you purchase in advance. Rates differ significantly by country, and Viber's pricing isn't always competitive. Calling the Philippines through Viber Out can run $0.40–$0.50 per minute to mobile numbers. A 15-minute call costs $6–$7. For comparison, check out our [cheapest way to call the Philippines from the USA](/blog/cheapest-way-to-call-the-philippines-from-the-usa-in-2026) breakdown — there are faster, cheaper options. Viber Out rates to popular destinations in 2026: - **USA/Canada:** Around $0.01–$0.02/min — competitive - **UK landlines:** Roughly $0.02–$0.04/min — reasonable - **India mobiles:** Can reach $0.02–$0.05/min depending on carrier — decent - **Nigeria:** Often $0.25–$0.40/min — expensive - **Philippines:** Up to $0.46/min to mobile — very expensive The cheaper destinations aren't bad. But Viber Out's credit system has an expiry mechanism — unused credits lapse if you don't top up regularly, which is an annoying gotcha for occasional callers. You also need the Viber app installed. No browser option, no desktop-first workflow. If you're calling from a work laptop without admin rights to install software, you're stuck. Our guide on [how to call from a browser to any phone number](/blog/how-to-call-from-a-browser-to-any-phone-number-for-free) explains why this matters more than most people expect. --- ## Comparing the Core Features: What You Actually Get Here's a direct comparison across the things that matter for international calling in 2026. ### Voice Call Quality Both apps use VoIP over internet, so quality depends heavily on your connection. Signal tends to perform slightly better in low-bandwidth conditions because its codec (Opus) is well-optimized for poor networks. Viber also uses Opus but adds compression that can degrade quality on unstable connections. For app-to-app calls on good connections, both are fine. For high-stakes calls — client meetings, international support lines, time-sensitive conversations — you want something more reliable than either. Browser-based VoIP with a dedicated connection tends to win here. Run a [browser call quality test](/tools/browser-call-quality-test) before any important call if you're unsure about your setup. ### Encryption and Privacy Signal wins here, and it's not close. Signal's encryption is open-source, audited, and widely considered the gold standard in secure messaging. The Signal Protocol is literally what WhatsApp's encryption is built on. Viber uses its own encryption implementation. It's encrypted, but not to Signal's standard. Viber also collects more metadata — who you called, when, for how long — stored on Rakuten's servers. If privacy is a hard requirement, Signal is the only sensible choice between these two. ### Who You Can Actually Reach Signal reaches only other Signal users. Free Viber calls reach only other Viber users. Viber Out (paid) reaches any phone number, anywhere. That's the defining difference. If your international contacts are already on Viber — which is genuinely popular in Eastern Europe, the Middle East, and Southeast Asia — free Viber-to-Viber calls are great. If they're not, you're either paying for Viber Out or asking them to download something. Signal offers no paid option. You can't dial a regular number through it, period. ### Platform Availability Both apps run on iOS, Android, Windows, and Mac. Signal also has a Linux client. Neither has a pure browser option — you always need the app installed or the desktop application linked to your phone. If you're frequently switching devices, working across corporate machines, or traveling with just a tablet, that's a real limitation. Our [FAQ on calling internationally from a browser](/faq/how-to-call-internationally-from-browser) covers the no-install alternatives in detail. --- ## Where Viber Actually Has the Edge Viber's user base is its biggest advantage in specific regions. In Ukraine, Belarus, Armenia, Serbia, and several Middle Eastern countries, Viber has high penetration rates. If you're regularly calling people in those areas, Viber-to-Viber is free and the app is almost certainly already on their phone. For families spread across Eastern Europe, Viber often makes more practical sense than any paid alternative. Group calls work well. The messaging features are solid. It's a full communication platform that happens to include calling, not just a calling tool. Viber also has a business product — Viber Business messages — though that's separate from international calling and mostly relevant for outbound messaging to existing Viber users. The [Viber alternatives](/alternatives/viber) page has a fuller breakdown if you want to compare Viber against the wider VoIP market rather than just against Signal. --- ## Where Signal Has the Edge (And It's Not Calling) Signal's advantages are almost entirely about security and privacy, not calling functionality. Disappearing messages. Sealed sender. No metadata logs. Screen security. Encrypted note-to-self storage. If you're a journalist, lawyer, activist, or anyone whose communications carry real-world risk, Signal is the right tool. The calling feature works well — it's just locked to Signal-to-Signal only. For international teams handling sensitive client data, Signal group calls are genuinely useful, but only if your whole team is already on Signal. Coordinating that across a distributed team takes real effort. For a more practical business phone setup, the [best business phone solutions for remote international teams](/blog/best-business-phone-solutions-for-remote-international-teams) article is worth reading. Honestly, Signal and Viber are solving different problems. Comparing them on international calling is like comparing a bicycle and a car on fuel efficiency — the framing only holds if calling regular phone numbers is what you actually need. --- ## The Situations Where Neither App Works Both apps fail in the same core scenario: you need to call a regular phone number and you don't want to install anything. Calling your bank from abroad, reaching an airline's local number, contacting a government office in another country — none of those places are on Signal. Most aren't on Viber either. You need to dial an actual number. Viber Out can technically handle this, but the rate structure is unpredictable and credit expiry is frustrating. And you still need the app installed. Browser-based VoIP fills that gap. GlobCall lets you [call international phone numbers directly from your browser](/call) — no download, no app, no SIM card required. Rates start at $0.02/min to the USA and Canada. [Calls to UK landlines](/call/uk) are $0.03/min. [India calls](/call/india) run $0.08/min. [Nigeria](/call/nigeria) is $0.33/min — still well below Viber Out rates on competitive routes. For teams, there's a shared balance across unlimited members with no per-seat fees. Worth comparing directly against Viber Out's per-user credit model if you have five or more people making international calls regularly. Our [comparison of pay-as-you-go vs. monthly subscription business phone](/faq/pay-as-you-go-vs-monthly-subscription-business-phone) models explains exactly when each approach saves money. A few specific routes worth checking: - **Calling a landline in Japan?** GlobCall's rate is [$0.15/min](/call/japan) — check whether Viber Out beats that before committing to credits. - **Calling Mexico?** [$0.03/min](/call/mexico) from the browser, two clicks, no app. - **Calling Australia landlines?** [$0.05/min](/call/australia) — often cheaper than Viber Out depending on your credit tier. The [international calling rates calculator](/tools/international-calling-rates-calculator) shows exactly what you'd pay per destination. --- ## B2B Reality Check: Can Your Business Use Viber or Signal? For a business making regular international calls, neither app is a real solution. Signal has no business features. No call recording, no number management, no shared team access, no local numbers in foreign countries. Viber for Business is primarily a messaging channel, not a phone system. You can't get a local German number for your Munich clients through Viber. You can't give your whole support team shared access to a call balance. You can't record calls for compliance. If your business needs local numbers across multiple countries — [a local UK number](/call/uk), a [local India presence](/call/india), or numbers across [100+ countries](/business) — that requires a proper VoIP solution. GlobCall's business tier includes local numbers in 100+ countries, shared balance across your team, and no seat fees. Unlimited team members on one account. That's the kind of setup that actually scales. The [virtual phone number for business](/faq/virtual-phone-number-for-business) FAQ covers what else is available in this space. --- ## Frequently Asked Questions ### Can Signal call regular phone numbers? No. Signal can only call other Signal users. There's no paid tier, no credits system, and no option to dial a standard mobile or landline number. If you need to reach someone who doesn't have Signal installed, the app can't help you. ### Is Viber Out worth it for frequent international callers? It depends on your destination. Viber Out is competitive on routes like USA, Canada, and some European countries. But rates to the Philippines ($0.40–$0.46/min) and Nigeria can be steep. Credits also expire, which penalizes irregular users. For [frequent calls to expensive destinations](/faq/cheapest-way-to-call-internationally), dedicated VoIP services usually offer better rates. ### Do Viber and Signal work without a SIM card? Yes, both work over Wi-Fi or any internet connection. You don't need an active SIM. Signal does require a phone number for initial registration, even if you don't use cellular service after setup. For fully SIM-free calling to regular phone numbers, browser-based VoIP is the cleaner option — see our [guide on calling without a SIM using Wi-Fi](/faq/how-to-call-without-sim-card-using-wifi). ### Which app is better for calling internationally in Eastern Europe? Viber, by a significant margin. Viber has dominant market share in Ukraine, Serbia, Bulgaria, and several CIS countries. App-to-app calls are free, and your contacts are likely already on Viber. Signal has a smaller footprint there, though it's growing among privacy-conscious users. For reaching landlines or businesses in those countries, browser VoIP is still the practical backup. ### What happened to Skype — is it still an option? Skype was shut down in May 2025 and migrated to Microsoft Teams. It's no longer available as a standalone service. The [best Skype alternatives after the 2025 shutdown](/blog/best-skype-alternatives-after-the-2025-shutdown) article covers the current options in detail. --- ## The Bottom Line Here's what actually matters: - **Signal** is excellent for private, encrypted communication between Signal users — but it can't call regular phone numbers, which makes it irrelevant for most international calling scenarios. - **Viber** is genuinely useful if your contacts are already on it, particularly in Eastern Europe and Southeast Asia. Viber Out works for calling real numbers, but credit expiry and high rates on some routes are real drawbacks. - **Neither app** is a good fit for businesses that need local numbers, team-shared balances, or reliable calls to landlines across many countries. - **For calling real phone numbers cheaply** — especially from a browser, without installing anything — browser-based VoIP is the practical answer in 2026. If you need to make international calls to actual phone numbers right now, [start calling from your browser at GlobCall](/call). No app, no seat fees, rates from $0.02/min.