Making calls over the internet has long ceased to be exotic—today it’s a standard feature of most smartphones. But with messengers like WhatsApp or Telegram everything is clear (they only work between users of the same applications), then how call a regular mobile or landline number via Wi-Fi? This is possible thanks to technology. VoWiFi (voice over Wi-Fi) and VoIP (voice over IP), which are integrated into operating systems or available through third-party services.
In this article, we will look at all the current methods - from built-in functions Android And iPhone to specialized apps. You'll learn how to set up Wi-Fi calling on any device, which carriers support this technology in 2026, and how to bypass restrictions if your provider hasn't yet enabled VoWiFi. We'll also compare the connection quality, cost, and reliability of each method.
⚠️ Important: VoWiFi and VoIP technologies depend on the policies of mobile operators and smartphone manufacturers. Some features may not be available on older devices or in certain regions. Before setting up, check your operator's support on their official website.
1. VoWiFi: Calling via Wi-Fi from the built-in SIM card
Technology VoWiFi (Voice over Wi-Fi) lets you make calls over the internet using your regular SIM card. The main advantage is that calls are made as if they were from a regular number, and the other end sees your real phone number. No additional apps are required: the feature is built into modern smartphones and supported by most carriers.
How does it work? When you're connected to Wi-Fi, your smartphone automatically switches to voice over internet if the cellular signal is weak or absent. This is especially useful in buildings with thick walls, basements, or in rural areas where 4G/5G coverage is spotty.
To activate VoWiFi:
- 📱 On Android: go to
Settings → Connections → Mobile networks → Wi-Fi callingand turn on the switch. On some models (for example, Samsung or Xiaomi) the path may differ:Settings → SIM cards and mobile networks → Advanced → Wi-Fi calling. - 🍎 On iPhone: open
Settings → Cellular → SIM Options → Wi-Fi Callingand activate the feature. On an iPhone with two SIM cards, choose which one to enable VoWiFi for.
⚠️ Attention: Not all operators support VoWiFi. The technology will be in active use in 2026. MTS, Beeline, Megaphone And Tele2, but activation may require a special plan or additional settings in your personal account. Check with your provider for details.
Your smartphone was released after 2018
The operator supports VoWiFi (list on the official website)
In the settings there is an item "Calling via Wi-Fi"
You are connected to a stable Wi-Fi network (speed from 5 Mbps)-->
2. VoIP applications for calling regular numbers
If your operator does not support VoWiFi or you want to make calls via Wi-Fi from a computer/tablet, we will come to the rescue VoIP servicesThey allow you to make calls to mobile and landline numbers over the internet, often cheaper (or free) than traditional telephony. Popular solutions:
- 📞 Google Voice (USA/Canada) — Free calls within the US and Canada, international calls are charged. Registration and number linking required.
- 🌍 Skype — Calls to mobile and landline numbers at rates (starting from 2 cents/minute). A subscription option with unlimited calls to some countries is available.
- 💬 Zoom Phone — a corporate solution with a dedicated number option. Suitable for businesses.
- 📱 Dingtone — Provides a virtual number for calls over Wi-Fi/3G. Free minutes when inviting friends.
Let's look at the setup as an example Skype:
- Download the app from App Store or Google Play.
- Log in or create an account Microsoft.
- Click on the phone icon at the top and select
Dial a number. - Please enter the number in international format (e.g.
+79123456789) and press the call button. - Pay for the call with a linked card or use credits Skype.
⚠️ Attention: When using VoIP services, the subscriber on the other end will not see your real number, but a service identifier (for example, skype:+79123456789) or a virtual number. If you're important to be recognized, let your contact know in advance which number you'll be calling from.
Skype
Google Voice
Dingtone
Zoom Phone
Other/I don't use-->
3. Calls via instant messengers with support for landline numbers
Some messengers allow calls not only between users but also to regular phones. This is convenient if you already have the app installed (for example, WhatsApp or Viber), and you don’t want to register for additional services.
Let's compare the features of popular messengers:
| Messenger | Calls to mobiles/landlines | Price | Number registration required |
|---|---|---|---|
| No (only between users) | For free | Yes | |
| Viber | Yes (through Viber Out) | From 1 cent/minute | Yes |
| Telegram | No | For free | No (it is possible without SIM) |
| Facebook Messenger | Yes (in some countries) | Paid minutes | Yes |
For example, in Viber to call a regular number:
- Open the tab
Calls(tube icon). - Click
Viber Outat the top of the screen. - Please enter the number in international format (e.g.
+74951234567for Moscow city). - Select a payment method (card or credit) Viber) and confirm the call.
💡 Advice: Before the first call through Viber Out Check the rates on the service's website—the cost per minute depends on the destination country. For example, calls within Russia can cost 1-2 rubles per minute, while calls to US mobile phones cost 5-10 rubles.
4. Virtual SIM cards for Wi-Fi calls
If you need get a new numberFor internet-only apps, consider virtual SIM cards. They're linked to your app account and allow you to make and receive calls over Wi-Fi or mobile data. Popular services:
- 📲 Google Fi (USA) - virtual operator from Google With VoWiFi and roaming support in 200+ countries. Requires a US address for registration.
- 🌐 Airalo — sells virtual eSIMs with numbers from different countries. Suitable for travel.
- 📞 TextNow — a free American number with Wi-Fi calling (limited to international calls).
For example, to get a number in TextNow:
- Download the app from App Store or Google Play.
- Register (email or account required) Google/Facebook).
- Select a toll-free number from the available ones (usually with a US or Canada area code).
- Confirm your number via SMS or call (if required).
- Now you can call any number via Wi-Fi (within the US/Canada - free, international - paid).
⚠️ Attention: Virtual numbers often have limitations:
- Numbers from TextNow or Dingtone may be blocked by banks and services (for example, for SMS confirmations).
- Calls to international numbers are charged (check rates on the service website).
- Some operators (eg Google Fi) require a compatible smartphone (list on the official website).
How to bypass blocking of virtual numbers?
Some services (such as banks or social media) block registration using virtual numbers. To reduce the risk:
1. Use the number of the country where the service is registered (for example, an American number for PayPal).
2. Buy numbers with history (in Airalo or SMS-Activate).
3. For important accounts, link a backup mobile operator number.
5. Setting up Wi-Fi calls on your computer
You can make calls via Wi-Fi not only from your smartphone, but also from laptop or PCThe following are suitable for this:
- 💻 VoIP applications (Skype, Zoom, Google Voice).
- 📱 Emulators Android (BlueStacks) with installed Viber or WhatsApp.
- 🔄 Synchronization of calls from your phone (for example, via Apple Continuity or Microsoft Your Phone).
Let's consider the synchronization of calls between iPhone And Mac:
- Make sure both devices are connected to the same Wi-Fi network and logged in under the same password. Apple ID.
- On iPhone go to
Settings → Phone → Calls on other devicesand enable the option. - On Mac open the application
FaceTimeand in the settings allow calls from iPhone. - Now you can receive/make calls directly from your computer, even if your phone is in another room.
For Windows And Android The application provides a similar function Microsoft Your Phone:
- Install Your Phone from Microsoft Store to and from PC Google Play on the phone.
- Log in with one account Microsoft.
- In your phone settings, allow access to calls and messages.
- On the computer in the application Your Phone a tab will appear
Calls, from where you can dial numbers.
📌 Key point: When making calls from your computer via phone sync, your SIM card is used. This means the caller will see your real number, and the operator will charge you accordingly. If you call via VoIP (for example, Skype), the number will be virtual.
6. Problems and solutions: why Wi-Fi calls don't work
Even with proper setup, Wi-Fi calls may not connect. Here are some issues and solutions:
| Problem | Possible cause | Solution |
|---|---|---|
| VoWiFi is not enabled in the settings. | The operator does not support the technology | Check the list of supported carriers on your phone manufacturer's website. |
| The call is dropping out or the sound quality is poor | Weak Wi-Fi signal or network congestion | Connect to a 5 GHz network or use a cable (Ethernet) connection |
| I can't call a landline number via VoIP. | Insufficient funds in the service account | Top up your balance in your VoIP app account |
| The subscriber doesn't see my number when calling via Wi-Fi. | A virtual VoIP number is used | Tell the subscriber in advance which number you will be calling from, or use VoWiFi |
🔧 Additional troubleshooting tips:
- 🔄 Restart your router and smartphone—this helps in 30% of VoWiFi connection issues.
- 📶 Check if your firewall or antivirus software is blocking VoIP traffic (e.g. Kaspersky may block Skype).
- 🔧 Update your router firmware—outdated versions may not process VoIP packets correctly.
- 📱 On Android try resetting network settings:
Settings → System → Reset → Reset Wi-Fi, mobile network, and Bluetooth settings.
⚠️ Attention: If you're using a corporate or public Wi-Fi network (such as at a hotel or airport), VoWiFi and VoIP may be blocked by the administrator. In this case, try connecting via mobile data or a VPN.
7. Security and privacy when making calls over Wi-Fi
Internet calls are convenient, but not always secure. Here's what to consider:
- 🔒 Encryption: VoWiFi from operators is usually encrypted (like regular calls), and VoIP services (for example, Skype) use their own protocols. Avoid little-known VoIP applications without encryption.
- 🕵️ Data collection: Free services like TextNow Your calls may be analyzed for targeted advertising. Please review the privacy policy before registering.
- 🌍 Geolocation: When using virtual numbers (for example, American ones) Google Voice) Some services can determine your location by IP. This may raise suspicions among banks or payment systems.
🛡️ How to protect your calls:
- Use a VPN when connecting to public Wi-Fi networks (e.g. ProtonVPN or NordVPN).
- Enable two-factor authentication on your VoIP service accounts.
- For important calls, choose VoWiFi from your operator—it's more reliable than third-party apps.
- Regularly check the list of devices connected to your VoIP account (in security settings).
Important: Calls made over public Wi-Fi networks (e.g., in cafes or airports) can be intercepted by hackers. Always use a VPN or prefer mobile data (3G/4G/5G) for private conversations.
FAQ: Frequently asked questions about Wi-Fi calling
Is it possible to make calls via Wi-Fi without a SIM card?
Yes, but only through VoIP applications (eg. Skype, Google Voice) or virtual numbers (for example, TextNow). VoWiFi requires an active SIM card from a supported operator.
How much does a minute of call over Wi-Fi cost?
Depends on the method:
- VoWiFi - at your operator's rate (often free as part of a minute package).
- VoIP (Skype, Viber Out) — from 1 cent/minute (rates depend on the country).
- Messengers are free between users, but calls to regular numbers are charged.
Why does the other person hear an echo or interruptions during a Wi-Fi call?
This is a common issue with a weak Wi-Fi signal or network congestion. Try:
- Connect to a 5 GHz network (if the router is dual-band).
- Close background applications that consume traffic (for example, torrents).
- Use a wired connection (Ethernet) instead of Wi-Fi.
- Switch to a mobile network (3G/4G) if Wi-Fi quality does not improve.
Is it possible to receive SMS via Wi-Fi?
Yes, if your carrier supports it. SMS over Wi-Fi (analogous to VoWiFi for messaging). The function is available on iPhone (in the settings next to VoWiFi) and some models Android (For example, Samsung or Google Pixel). You can also receive SMS through applications like Google Messages or Microsoft Your Phone.
Do Wi-Fi calls work abroad?
Yes, but there are some nuances:
- VoWiFi — works if your carrier supports VoWiFi roaming (check with your provider). Calls are charged at the same rate as when roaming.
- VoIP (Skype, Google Voice) - works everywhere, rates depend on the service.
- Virtual numbers (eg TextNow) - may not work in some countries due to blockages.
The most convenient way to use VoIP applications abroad is with a local SIM card for internet.