How to make calls via Tele2 WiFi: A complete guide to setting up VoWiFi

The modern pace of life dictates its own conditions, and stable connectivity is becoming critical not only in the city center but also in remote areas where cellular signal can be unstable. VoWiFi (Voice over WiFi) technology from the operator Tele2 Allows you to make and receive voice calls using only a wireless internet connection, radically changing your understanding of subscriber accessibility. This solution is ideal for those who frequently spend time in buildings with thick walls, basements, or simply in areas where traditional GSM/3G/4G signal coverage is weak or nonexistent.

Unlike traditional messengers, where calling the other person also requires an application, the technology Voice over WiFi Integrated directly into your smartphone's default dialer. You don't need to ask contacts to switch to Telegram or WhatsApp; simply dial the number as you normally would. The operator Tele2 was one of the first in Russia to actively implement this service, providing high-quality sound and seamless transition between networks if you leave the router's coverage area but are within a strong base station coverage area.

Before we dive into the step-by-step instructions, it's important to understand that successful activation depends not only on your phone's settings but also on whether your plan and device model support the feature. In most cases, the service is free, and minutes are charged according to your basic plan. However, it's always a good idea to check your pricing terms in your personal account. Below, we'll cover all the activation details, potential issues, and the intricacies of how the technology works across various platforms.

What is VoWiFi and how does it work with Tele2?

Technology VoWiFi This is a method of transmitting voice traffic over IP, which technically turns your voice call into a data stream, similar to video streaming, but with real-time priority. When you activate this feature on a device with a SIM card Tele2, the smartphone redirects the voice call via an available Wi-Fi network to the operator's servers, which then routes the call to the public telephone network or another subscriber. This allows you to bypass cellular coverage limitations using any internet access point, whether a home router or a public network at a cafe.

The key advantage is maintaining a single phone number and a familiar dialing interface. You don't need to remember new codes or ask your caller to install additional software. Moreover, modern protocol implementations allow for seamless handover between Wi-Fi and a 4G/5G cellular network during a call, for example, if you leave the house without interrupting the conversation. However, stable operation requires sufficiently high internet speed and low ping, which is ensured by modern standards. IEEE 802.11 ac/ax.

⚠️ Attention: Connection quality directly depends on your bandwidth. If several devices are simultaneously connected to the router, actively downloading large files or watching 4K video, voice quality may deteriorate, and lag or artifacts may appear.

Operator Tele2 uses secure encryption channels to transmit voice data, ensuring the privacy of your conversations even when using open networks. It's important to note that your phone must support the technology for this feature to work. IMS (IP Multimedia Subsystem), which is standard on most modern smartphones released after 2016. If your device is fairly new and the feature isn't working, the problem may be with the software or network profile settings.

Checking device and tariff compatibility

The first step before attempting activation is to ensure that your device is technically capable of supporting this type of connection. Not all smartphone models, even relatively recent ones, have the necessary module or software support from the manufacturer to work with specific carriers. Tele2 provides service on most popular brands such as Samsung, Apple, Xiaomi, Honor And Huawei, but the list is constantly updated.

Regarding the tariff plan, the situation is quite transparent: the "Wi-Fi Calling" service is usually enabled by default in all current and archived operator plans. However, if you are using a very old plan or a limited-use corporate solution, the feature may be blocked at the network level. You can check your connection status through the "My Tele2" mobile app or your personal account on the website, where the option should be displayed in the services section. Voice over WiFi or similar.

It is also critical to ensure that the feature is enabled on your device. VoLTE (Voice over LTE). In many cases, these two technologies are linked, and without VoLTE enabled, your phone may not be able to activate wireless calling. Make sure you have VoLTE enabled in your mobile network settings. 4G/LTE or 5G, and not only 3G/2G.

List of fully compatible models (approximate)

Samsung Galaxy S20-S24, A-series (A50 and later); Apple iPhone 6s and later (with iOS 14+); Xiaomi Mi 9, Mi 10, Redmi Note 8 and later; Huawei P30, P40, and Mate series. It's best to check the exact list on your carrier's official website, as it's updated monthly.

The software component should also be taken into account: the operating system must be updated to the latest version. Owners Android should keep up with system updates and security patches, as operators often gain access to new communication features through system updates from Google or the smartphone manufacturer. iOS It is enough to maintain the current version of the system available for your model.

How to enable WiFi calling on Android

The activation process on devices running Android The process may vary slightly depending on the manufacturer's user interface (MIUI, OneUI, EMUI, etc.), but the general logic remains the same. First, ensure your smartphone is connected to Wi-Fi. Then, go to the device's main settings, usually the gear icon in the app drawer or notification shade.

In the menu that opens, find the section responsible for connections. It may be called Connections, Mobile network or Network and Internet. Inside this section you need to find the item Wi-Fi Calling or "Wi-Fi Calling." If you don't see this switch right away, try going to the "Advanced" menu or tapping the name of your SIM card (if you have two), where the detailed settings are located.

After enabling the slider, the system may prompt you to select a network priority. It's recommended to set "Prefer Wi-Fi" if you're in an area with a poor cellular signal but a stable internet connection. If the signal is strong, it's best to leave "Prefer Mobile Network" selected so the phone uses Wi-Fi only as a backup. After applying the settings, a special icon, often depicting a phone handset with a Wi-Fi symbol, should appear in the top status bar next to the Wi-Fi indicator.

In some cases, especially on custom firmware or smartphones imported from other regions, the menu item may be hidden. In this case, you can try searching for the following in the settings search: VoWiFi or Wi-Fi CallingIf the search yields no results, your operator may not have certified this specific model for use on their network, and this will require tampering with system files or installing a special profile, which is not recommended without proper training.

⚠️ Attention: On dual-SIM phones, settings must be configured separately for each SIM card. Make sure the correct SIM card is selected in the settings menu. Tele2, for which you want to activate the function.

Setting up VoWiFi on iPhone (iOS)

For smartphone owners Apple We're fortunate to have a more unified interface, where the setup process is as standardized as possible. First, make sure your device is updated to the latest available version. iOSTechnology support depends not only on the carrier but also on the software version, as Apple regularly adds support for new telecom standards.

Go to the menu Settings and select a section Cellular communications (Cellular). If you have two SIM cards (physical and eSIM), select the number Tele2. Next, find the item Wi-Fi callingTurn the switch to the on position. The system will ask for confirmation of your action, warning you about transmitting your location data to the emergency services operator (E911), which is standard practice worldwide.

The "On other devices" option is also available in this menu. If you enable it, incoming calls to your number will be Tele2 Calls will also be sent to your iPad, Mac, or Apple Watch if they're connected to the same iCloud account and on the same Wi-Fi network. This creates a unified communications ecosystem, allowing you to answer calls even if your iPhone is in another room or out of battery (provided the watch has its own SIM card or is connected to Wi-Fi).

After switching on, the following message should appear in the status bar to the left of the operator's name: Tele2 Wi-FiThis means that all outgoing and incoming calls will now be made over the internet. If the message doesn't appear, try turning Airplane mode on and off or restarting your device. Also, make sure that in the Basics → About this device The "Operator" field indicates the current version of the operator settings (update them if necessary).

Table: Comparison of characteristics and requirements

To better understand the differences and requirements for different device types and environments, we've prepared a summary table. It will help you quickly understand what to expect from the technology in your specific situation.

As can be seen from the table, devices based on iOS exhibit more predictable behavior due to Apple's tight control over the ecosystem. Android The diversity of manufacturers means that a feature may be readily apparent on one phone, while hidden deep in the engineering menu on another. Older smartphone models, unfortunately, lack the hardware capability to handle voice traffic over carrier-grade IP protocols.

Solution: Why calls don't work

Even if all instructions are followed, users may encounter a situation where the feature doesn't activate or calls are dropped. One of the most common causes is blocked ports on the router. Some home internet providers or corporate networks may block the protocols required for SIP (Session Initiation Protocol), which is used to establish a connection. On a home network, try rebooting the router or temporarily disabling the firewall.

Another common issue is a SIM card conflict. If your phone has two numbers from different carriers, and both are trying to use Wi-Fi for calls, there may be a software conflict. Try temporarily disabling the second SIM card and checking if it works. Tele2Also, make sure your primary number has sufficient funds, even if you have an unlimited plan, as technically, each minute of connection is still charged (at the zero rate).

⚠️ Attention: When calling emergency services (112, 102, 103) via Wi-Fi, determining your location may be inaccurate or impossible, as Wi-Fi does not transmit geographic coordinates as accurately as cell towers. In critical situations, the operator may attempt to switch you to a cellular network.

If the problem persists, it might be worth deleting the Wi-Fi network profile and reconnecting, entering the password. Sometimes resetting the network settings (not a full reset of the phone, but a Reset network settings in the recovery menu), but remember that this will delete all saved Wi-Fi passwords and Bluetooth settings.

Frequently Asked Questions (FAQ)

Is there an extra charge for Wi-Fi minutes?

No, the operator uses VoWiFi technology. Tele2 There's no separate charge. Call minutes are deducted from your main package according to your plan, just like regular cellular calls. If you have unlimited minutes, they'll also be unlimited over Wi-Fi.

Do you need a separate number or app for calling?

Absolutely not. You use your primary phone number and the standard "Phone" app that's already installed on your smartphone. To the other person, your call will appear as a regular incoming call from your number.

Is it possible to make calls via Wi-Fi while abroad?

Yes, this is a great way to save money while roaming. While abroad, you connect to local Wi-Fi (at a hotel or cafe) and call Russian numbers. In this case, your home region's rates apply, rather than roaming rates, allowing you to save significantly. However, incoming calls may be charged according to roaming rules.

Why does the Wi-Fi Call icon appear and disappear?

This could be due to an unstable Wi-Fi signal. If the speed drops below a certain threshold, the phone automatically switches to the cellular network (if available), and the icon disappears. It could also be due to power-saving settings that "sleep" the Wi-Fi module.

Does this feature work if the SIM card is very old?

In most cases, yes, since the service is tied to the operator's network profile, not the physical chip. However, if the SIM card was issued more than 10 years ago and does not support 4G/LTE, you may have problems registering with the IMS network. In this case, it is recommended to replace the SIM card with a new one at a mobile phone store, keeping your phone number.