Secret Code *#*#869434#*#* to Activate Wi-Fi Calling: A Complete Guide 2026

Have you ever experienced a situation where your mobile network drops in the most inconvenient place—for example, in an office basement or a thick-walled country house? In such moments, technology comes to the rescue. Wi-Fi calling (VoWiFi), which allows you to make calls over the internet even if there is no cellular signal. One little-known way to activate this feature is to use secret engineering code ##869434##.

This code works on many devices running Android and opens access to hidden settings where you can manually enable VoWiFi support. However, its use has its nuances: not all carriers support the technology, and on some smartphones the code may not work due to manufacturer restrictions. In this article, we'll take a detailed look at how to use it correctly. ##869434##, which phone models are compatible with it, and what to do if the code doesn't work.

A word of caution: working with engineering codes requires caution. Incorrect actions can cause malfunctions or even void your phone's warranty. If you're unsure of your skills, it's best to use the default settings or contact your carrier.

What is code? ##869434## and how it works

Code ##869434## - this is the so-called USSD code (or engineering code) that opens access to the hidden settings menu IMS (IP Multimedia Subsystem) on devices AndroidIMS is the protocol responsible for transmitting voice calls and SMS over the internet (VoLTE and VoWiFi). When you enter this code, the phone checks the current status of the IMS service and allows you to manually enable or disable support. Wi-Fi calling.

It's important to understand that the code itself doesn't "hack" the VoWiFi function. It simply instructs the system to check for service availability with your carrier and activate it if necessary. If your carrier doesn't support Wi-Fi calling or your plan doesn't include this option, the code won't work—regardless of your phone model.

Technically the process looks like this:

1. You enter the code ##869434## in the Phone app.
2. The system sends a request to the module IMS Service.
3. If the IMS service is active and your operator supports VoWiFi, your phone will prompt you to enable the feature.
4. After activation, a new option for managing Wi-Fi calls will appear in the settings.

On some devices (eg. Samsung or Xiaomi) The code can open an extended menu with additional options, such as network priority (4G/3G/2G) or call quality settings. However, the primary purpose is to activate VoWiFi.

What phones does the code work on? ##869434##

Code ##869434## It is not universal - its support depends on the phone manufacturer, version Android and even regional firmware settings. Below we provide a list of devices on which this code is highly likely to work, as well as models where it may not work.

Compatible devices (tested by users):

• 📱 Samsung Galaxy (S8–S23 series, Note 8–Note 20, A-series with Android 9+)
• 📱 Google Pixel (all models starting with Pixel 3)
• 📱 OnePlus (6T, 7/7T, 8/9/10 series, Nord)
• 📱 Xiaomi (Redmi Note 10/11, Mi 11/12, POCO F3/4/5)
• 📱 Sony Xperia (1/5/10 series with Android 10+)

Devices where the code may not work:

• ❌ Huawei And Honor (due to lack of Google services and EMUI limitations)
• ❌ Meizu, Nokia, Motorola (depending on firmware, often requires root rights)
• ❌ Old devices with Android 8 and below (no IMS support)
• ❌ Phones with custom firmware (for example, LineageOS without Google Services)

If your phone isn't on the list, it doesn't mean the code won't work. For example, on some models Realme or Oppo The code may open the menu, but it won't allow you to change VoWiFi settings. The best way to check is to simply enter the code and see how the system responds.

Step-by-step instructions: how to activate Wi-Fi calling via code

If your phone is compatible with the code ##869434##Follow these instructions to enable Wi-Fi calling. Important: Before you begin, check whether your carrier supports VoWiFi (more on that below).

Step 1. Enter the code

1. Open the standard Phone app (not messengers like WhatsApp or Viber).
2. Go to the dialer tab (where you usually enter phone numbers).
3. Enter the code: ##869434##.
   Note: On some phones, after entering the last character, the menu opens automatically, on others you need to press the call button.

Step 2. Working with the IMS menu

After entering the code, you will see one of two things:

• 🔧 A menu labeled "IMS Service" - you need to find the item here VoWiFi or Wi-Fi Calling and switch it to the "On" position.
• 📱 "IMS Service enabled" message - this means that the function is already active, and now it needs to be enabled in the standard phone settings.

Step 3. Setting up the default settings

If the code worked, but Wi-Fi calling didn't appear immediately:

1. Go to Settings → Connections → Mobile networks (or SIM cards and mobile networks).
2. Select your SIM card.
3. Find the item Wi-Fi calling or VoWiFi and activate it.
4. Select operating mode:
   • 🔄 Wi-Fi is preferred — calls will go through the Internet, even if there is a mobile network.
   • 📶 Mobile network is preferred — Wi-Fi is used only when there is no signal.

Step 4: Reboot and check

After activation, restart your phone. To ensure everything works:

• 📞 Call another number.
• 🔍 An icon should appear in the status bar Wi-Fi or VoWiFi next to the signal level.
• 📶 Turn off mobile data and check if the call goes through Wi-Fi.

What to do if the code ##869434## doesn't work

If nothing happens after entering the code or an error message appears, the reasons may be as follows:

If the code doesn't work, try alternative methods to activate VoWiFi:

• 🔄 Default settings: On some phones (eg. iPhone or new ones Samsung) Wi-Fi calling is enabled through Settings → Phone → Wi-Fi Calling.
• 📱 Operator application: U MTS, Beeline, Tele2 And Megaphone There are official applications where you can activate VoWiFi.
• 🔧 Manual APN setup: Sometimes adding a new APN with operator parameters helps (check with support for details).

Why might operators block VoWiFi?

Some operators limit VoWiFi on certain plans or in regions with poor 4G coverage. The feature may also be disabled due to legal restrictions (such as FSB subscriber identification requirements).

Important: On rooted phones, you can force VoWiFi to be enabled by editing the file build.prop or installing a modified IMS module. However, this is risky and can lead to unstable communication.

Which operators in Russia support Wi-Fi calling?

As of 2026, all major Russian operators officially support VoWiFi technology, but with some caveats. Below are updated materials for each of them:

MTS

• ✅ VoWiFi support: Yes, on most plans.
• 🔹 Features: Requires activation via the "My MTS" app or a USSD command *111*465#.
• 📡 Coverage area: Works wherever there is internet (including roaming).

Beeline

• ✅ VoWiFi support: Yes, but only on plans with unlimited minutes.
• 🔹 Features: Must be enabled in the SIM card settings or via *110*180#.
• ⚠️ Limitation: Additional charges may apply while roaming.

Megaphone

• ✅ VoWiFi support: Yes, for subscribers with the "All Inclusive" and "Unlimited" tariffs.
• 🔹 Features: Activation via *105*485# or personal account.
• 🔄 Priority: By default, calls are made via the mobile network, with Wi-Fi as a backup channel.

Tele2

• ✅ VoWiFi support: Yes, but only in the home region.
• 🔹 Features: Requires a nano-SIM card and a phone with Android 9+. Activation via *155*1#.
• ⚠️ Limitation: VoWiFi is automatically disabled when roaming.

Yota And Tinkoff Mobile

• ❌ VoWiFi support: No official support (use partner networks).
• 🔄 Workaround: You can try activating via code, but stability is not guaranteed.

Security and potential risks when using VoWiFi

Wi-Fi calling is convenient, but it has its vulnerabilities. Here's what to look out for:

1. Data leakage through unsecured networks

If you're connected to public Wi-Fi (like at a cafe or airport), your calls can be intercepted. VoWiFi is encrypted, but Not all operators use modern protocols (For example, SRTP or TLS 1.3).

2. Problems with emergency calls

In some countries (including Russia) calls to 112 or 102 Wi-Fi calls may not work or may be incorrectly located. Always make sure your phone can automatically switch to a mobile network for emergency calls.

3. Increased battery consumption

Constantly running Wi-Fi and IMS can reduce battery life by 10-15%. If you notice your phone's battery draining faster, try disabling VoWiFi in the settings.

4. Conflicts with VPNs and firewalls

Some VPN services (eg. NordVPN or ProtonVPN) block VoWiFi traffic. If calls stop working after connecting to a VPN, try:

• 🔌 Disable VPN.
• 🔄 Add an exception for IMS traffic in the VPN settings.
• 📱 Switch to mobile network for calls.

⚠️ Attention: If you use VoWiFi abroad, your carrier may consider these calls roaming charges, even if you're connected to a local Wi-Fi network. Check the rates in advance to avoid unexpected charges.

Wi-Fi Calling Alternatives: What to Do When VoWiFi Isn't Available

If your phone or carrier doesn't support Wi-Fi calling, there are several alternative ways to make calls over the internet:

1. Messengers with voice call support

• 💬 WhatsApp — calls between WhatsApp users, free.
• 📱 Telegram — encrypted voice chats and calls.
• 🔵 Viber — supports calls to regular numbers (paid).
• 🟢 Skype — calls to landlines and mobile phones (billing per minute).

2. SIP telephony

Services like Zadarma, Sipnet or Mango Office Allows you to call any number over the internet at low rates. To do this, you need:

1. Register on the provider's website.
2. Install a SIP client (for example, Zoiper or Linphone).
3. Set up an account in the application.

3. Virtual SIM cards

Services like Google Voice (available via VPN) or Dingtone They provide virtual numbers that only work online. The downside is that you can't call Russian numbers without additional settings.

4. Local solutions for business

If you need business calling over Wi-Fi, consider:

• 🏢 Cloud PBX (For example, Mango Telecom or Binotel).
• 📞 IP telephony from the Internet provider (for example, Rostelecom or Dom.ru).

⚠️ Attention: When using alternative services (especially SIP), check the legality of calls to emergency numbers (112, 101, 102, etc.). In Russia, such calls are only permitted through mobile operators.

FAQ: Frequently asked questions about the code ##869434## and Wi-Fi calls

❓ Can the code be used on an iPhone?

No, on iPhone This code doesn't work. To activate Wi-Fi calling on your iPhone, you need to go to Settings → Phone → Wi-Fi Calling and enable the feature. Operator support is also required (in Russia, VoWiFi on iPhone officially only works with MTS And Beeline at new rates).

❓ Why do I get the error "IMS not registered" after entering the code?

This error means your carrier doesn't support IMS services (VoLTE/VoWiFi) or your SIM card isn't linked to the appropriate plan. Solutions:

• Call the operator and check if the service is available.
• Try inserting the SIM card into another phone (for example, Samsung or Pixel) and enter the code again.
• Update your phone's firmware - sometimes IMS support is added in new versions.

❓ Will Wi-Fi calls be charged like regular calls?

Yes, in most cases, VoWiFi calls are charged to your plan just like regular calls. However, there are some caveats:

• If you are roaming, your operator may consider such calls as international.
• On some plans (for example, with unlimited minutes), VoWiFi may be free even abroad.
• Please check the terms and conditions in your personal account or with support—rules may vary.

❓ Is it possible to make calls via Wi-Fi without a SIM card?

No, VoWiFi requires an active SIM card with IMS support. If you need SIM-free calling, use messaging apps (WhatsApp, Telegram) or SIP telephony.

❓ Why did my internet connection disappear after activating VoWiFi?

This may be due to a conflict with your APN settings. Try:

1. Restart your phone.
2. Reset network settings in Settings → System → Reset → Reset Mobile Network.
3. Manually add the operator's APN (parameters can be found on its website).

If the problem persists, disable VoWiFi and contact your operator's support.