VoWiFi on Tele2: How to connect and use Wi-Fi calling in 2026

Calls by Wi-Fi (VoWiFi) from Tele2 Allows you to talk even where there's no cell service—in basements, subways, or country houses with poor coverage. The technology uses your internet connection to transmit voice, preserving your phone number and tariff terms. The operator is actively developing this feature in 2026, but its configuration depends on the smartphone model, firmware version, and tariff plan.

Unlike VoLTE (4G calls) that require mobile network coverage, VoWiFi on Tele2 works through any Wi-Fi router, including home and public networks.This makes the technology indispensable for travelers, residents of remote regions, or owners of remote offices. However, not all devices support this feature out of the box—sometimes manual activation in the settings or a software update is required.

In this article you will find up-to-date instructions on how to connect VoWiFi on Android And iPhone, a list of compatible phone models, and answers to frequently asked questions: why the feature isn't working, how to check if it's available on your plan, and what to do if calls are dropped. All steps have been tested using the latest updates. Tele2 (2026).

📊 Does your smartphone support VoWiFi?
Yes, everything works.
No, I don't know how to turn it on.
I tried, but it didn't work.
I don't need this

1. What is VoWiFi and how is it different from VoLTE?

Technologies VoWiFi (Voice over Wi-Fi) and VoLTE (Voice over LTE) is often confused, although they solve different problems:

  • 📶 VoLTE — Calls over 4G/5G networks. Requires mobile operator coverage, but provides better voice quality (HD sound) and a faster connection.
  • 📶 VoWiFi — Wi-Fi calling. Works even without a cellular connection, but depends on a stable internet connection. Suitable for areas with poor signal. Tele2.

The main advantage of VoWiFi is smooth transition between networks. For example, if you started a call at home over Wi-Fi and then went outside where there was a 4G signal, the call won't be interrupted (if your device supports the feature). Wi-Fi Calling Handover).

On Tele2 Both technologies are available free of charge, but their operation depends on:

  • 📱 Smartphone compatibility (list below).
  • 📋 Tariff plan (some corporate or legacy plans may not support VoWiFi).
  • 🔄 Settings in the operator's personal account.

2. Compatible devices: list of smartphones for VoWiFi on Tele2

Not all phones support it. VoWiFi on Tele2The operator regularly expands the list, but the following models are guaranteed to be operational in 2026:

Brand Models (2020–2026) Notes
Apple iPhone 8 and newer (including SE 2/3, 13/14/15) Requires iOS 14+ and a SIM card Tele2 in slot 1
Samsung Galaxy S10–S24, Note 10–Note 20, A52–A73, Fold/Flip Some models require a firmware update to One UI 5.0+
Xiaomi Redmi Note 10–13, POCO F3–F5, Mi 11–14 VoWiFi may not be available on global versions (requires EEA or RU firmware)
Realme/Oppo Realme 9–11, Oppo Reno 8–11, Find X5–X7 Check the availability of the item Wi-Fi Calling in the SIM card settings
Google Pixel 4a–Pixel 8 Pro Out-of-the-box support on all models

If your model is not on the list:

  1. Update your firmware to the latest version.
  2. Check your settings: Settings → SIM cards & mobile networks → Advanced → Wi-Fi calling.
  3. Contact support Tele2 (Your device may be supported but not shown in the official list).
How to check VoWiFi support on custom firmware?

On custom firmware (such as LineageOS), this feature may not work even on supported models. Check for the presence of the file. /system/etc/wifi/WifiCalling.config - if it is not there, VoWiFi is not available.

3. Step-by-step setup of VoWiFi on Android

Activating Wi-Fi calling on Android consists of two stages: enable in smartphone settings And check in your personal account Tele2Follow the instructions for your operating system version:

For Android 12–14 (Samsung, Xiaomi, Google, etc.)

  1. Open Settings → SIM cards and mobile networks.
  2. Select a SIM card Tele2 (if there are several).
  3. Tap on the item Wi-Fi calling or Wi-Fi Calling.
  4. Switch the slider to the position On.
  5. Confirm activation if prompted (you may need to enter a code from an SMS).

For Android 10–11 (older versions)

  1. Go to Settings → Networks & Internet → Mobile Network → Advanced.
  2. Find the item Enhanced services (VoLTE/VoWiFi).
  3. Turn on Wi-Fi calling and save the changes.

Connected to Wi-Fi|Tele2 SIM card in slot 1|Phone firmware updated|No service blocks in your account-->

After enabling the function in the phone settings:

  1. Restart your device.
  2. Make sure the icon appears in the status bar. Wi-Fi next to the signal level or inscription VoWiFi.
  3. Try making a test call (for example, to the number 611 - support Tele2).

4. Setting up VoWiFi on iPhone (iOS 15–17)

On iPhone Wi-Fi calling is easier to enable than on Android, but there are some nuances with the procedure. Important: SIM card Tele2 must be installed in first slot (if you have Dual-SIM).

  1. Open Settings → Cellular.
  2. Select a SIM card Tele2.
  3. Tap on the item Wi-Fi calling.
  4. Toggle the slider Wi-Fi Calling on This iPhone in position On.
  5. Confirm activation if a notification from your operator appears.

For iPhone with two SIM cards:

  • 📱 VoWiFi will only work on basic SIM card (the one in slot 1).
  • 🔄 If you use an eSIM, make sure it is activated as the primary one.

After switching on:

  • The following message will appear in the status bar: Tele2 Wi-Fi.
  • Calls will automatically switch between Wi-Fi and cellular networks.

5. Check VoWiFi activation in your Tele2 account

Even if you turned it on VoWiFi On your phone, your operator may block the feature at the plan level. To ensure the service is active:

  1. Go to personal account Tele2 (via browser or app).
  2. Go to the section Services → My services.
  3. Find the item Wi-Fi calling or VoWiFi.
  4. If the service is disabled, click Connect (for free).

If there is no such item in your personal account:

  • 📵 Your plan does not support VoWiFi (relevant for corporate or legacy plans).
  • 🔄 Try changing your tariff to a newer one (for example, My Tele2 or Unlimited).
  • 📞 Contact support at 611 and clarify the reason for the blocking.
What should I do if I don't see the VoWiFi option in my personal account?

Sometimes the feature is hidden, but technically available. Try sending a USSD request. *155*1# - this forcibly activates the service (does not work on all tariffs).

Also check if you have the service enabled. Outgoing calls blocked or Communication restriction — they can block VoWiFi. Disable them in the section Services → Service Management.

6. Why VoWiFi isn't working on Tele2: common problems

If Wi-Fi calling isn't working after setup, there could be a variety of reasons, ranging from phone errors to router limitations. Let's look at some common cases:

Problem 1: There is no "Wi-Fi Calling" option in the settings

Solutions:

  • 🔄 Update your smartphone firmware to the latest version.
  • 📱 Check if your model supports VoWiFi (see the table above).
  • 🔧 Reset network settings: Settings → System → Reset → Reset network settings.

Problem 2: VoWiFi turns on, but calls don't go through

Possible reasons:

  • 🌐 The Wi-Fi router is blocking the protocol IMS (required for VoWiFi). Solution: enable SIP ALG in the router settings or update its firmware.
  • 📵 The SIM card is not activated for VoWiFi. Solution: Restart your phone or reinstall the SIM card.
  • 🔒 The operator has temporarily suspended the service. Solution: Call support. Tele2 (611).

Problem 3: Calls drop when switching from Wi-Fi to 4G

This means that your smartphone does not support smooth transition (Wi-Fi Calling Handover). There are two solutions:

  • 📱 Update the firmware (on some models Samsung And Xiaomi The function appears after the update).
  • 🔄 Disable VoWiFi manually if connection stability is critical.

Problem 4: VoWiFi turns on on iPhone, but doesn't work

For iPhone typical solutions:

  • 🔄 Reinstall the SIM card into slot 1.
  • 📱 Reset network settings: Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
  • 🔧 Update iOS to the latest version.

7. VoWiFi and VoLTE: can they be used simultaneously?

Yes, on Tele2 Both technologies can work in parallel. For example:

  • 📶 At home (where there is Wi-Fi) calls will go through VoWiFi.
  • 📶 On the street (where there is 4G) - VoLTE.

To enable both features:

  1. Activate VoLTE in the phone settings (the path is similar to VoWiFi).
  2. Make sure that in your personal account Tele2 There are no restrictions on these services.
  3. Check if your tariff supports both technologies (VoLTE may be disabled on some corporate tariffs).

Benefits of sharing:

  • ⚡ Fast connection (VoLTE connects in 1–2 seconds).
  • 🎧 Better sound quality (HD voice in VoLTE).
  • 🔄 Seamless transition between networks without call interruptions.
How to check if VoLTE is working?

During a call, look at the signal icon. If instead 3G or H+ is displayed 4G or HD, then VoLTE is active.

8. VoWiFi Alternatives: What to Do If the Feature Is Unavailable

If your smartphone or tariff does not support VoWiFi, there are several alternative ways to make calls via Wi-Fi:

1. Internet calling apps

  • 📞 Tele2 ID (the operator's official app with free calls between subscribers Tele2).
  • 🌍 WhatsApp, Viber, Zoom - calls via the Internet, but not linked to your number Tele2.

2. Call forwarding

Set up call forwarding to another number (for example, to WhatsApp or landline phone):

Dial 21[number]*11# → Call

Example: *21*79111234567*11#

To cancel: ##21# → Challenge.

3. Wi-Fi router with 3G/4G support

If you have 4G router (For example, Huawei B535), connect your phone to it via Wi-Fi and make calls using your carrier's mobile network. This isn't VoWiFi, but it will solve the problem of no signal.

FAQ: Frequently asked questions about VoWiFi on Tele2

❓ Is VoWiFi paid or free?

Service VoWiFi on Tele2 It's free, but charges according to your plan's terms. For example, if you have unlimited calls, your Wi-Fi calls will also be unlimited. If you have a pay-per-minute plan, the call cost won't change.

❓ Can I use VoWiFi abroad?

Yes, but with some reservations:

  • 🌍 Calls will be charged as roaming (if you have not enabled the "Like Home" option).
  • 📶 You need to connect to Wi-Fi (hotel, cafe, local SIM card with internet).
  • ⚠️ Some countries block VoWiFi at the operator level (for example, the UAE, China).
❓ Why does VoWiFi only work on one device?

On Tele2 the service is linked to one SIM cardIf you have two phones with one SIM (for example, a primary and a backup), VoWiFi will only be active on the device on which you enabled the latter. To transfer activation, disable VoWiFi on the first phone and enable it on the second.

❓ How do I disable VoWiFi?

To disable Wi-Fi calling:

  1. On Android: Settings → SIM cards → Wi-Fi calling → Off
  2. On iPhone: Settings → Cellular → Wi-Fi Calling → Off
  3. In your personal account: Services → VoWiFi → Disable.

After disabling, calls will only go through the cellular network (2G/3G/4G).

❓ Does VoWiFi work on tablets?

No, Tele2 does not support VoWiFi on tablets, even if they have a SIM card installed. The feature is only available on smartphones from list of compatible devicesAn alternative is to use internet calling apps (WhatsApp, Skype).

1) Phone compatibility.

2) Router settings (disable SIP ALG, if it is enabled).

3) No blocking in your personal account Tele2.

If everything is fine, but the problem persists, please contact support and ask them to check the IMSI binding to the service.

VoWiFi on Tele2 — a useful feature for those who frequently travel to areas with poor coverage. Despite some limitations (the list of supported devices and router dependency), the technology allows you to stay connected in areas where a regular mobile network is ineffective. By following the instructions in this article, you can activate the service on most modern smartphones and use it at no additional cost.

If you have any questions about setup or are experiencing difficulties with a specific phone model, please contact official support for details. Tele2 (number 611 (Or chat in your personal account). Happy communication!

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