Modern mobile technology is advancing rapidly, and operators are introducing new features to improve call quality. One such feature is VoWiFi, which allows for calls over a Wi-Fi network. However, this feature doesn't always work correctly or suit the user's needs. Subscribers often encounter situations where their smartphones are stuck on weak Wi-Fi instead of a strong cell tower signal, leading to connection drops.
For tariff owners MTS The question of how to disable Wi-Fi calling becomes especially relevant if the internet connection is poor. In this article, we'll detail all the ways to disable the feature, explain the technical nuances of how the technology works, and help you configure your device for stable voice communication. You'll learn where to find the settings in different operating systems and what to do if standard methods don't work.
Sometimes the problem isn't rooted in your phone's settings, but in the interaction between your carrier's equipment and your router. Understanding these processes will help you avoid unnecessary time and frustration. We'll cover not only software-based disabling, but also possible hardware limitations and the impact of firmware updates on voice services.
What is VoWiFi and why might calls drop?
Technology Voice over Wi-Fi (VoWiFi) allows voice traffic to be transmitted over the internet rather than a traditional cellular network. This is convenient in areas with poor GSM/LTE coverage but excellent Wi-Fi, such as basements or offices with thick walls. However, if your router is overloaded or your provider throttles the speed, connection quality will drop sharply.
The main problem occurs when switching between networks. The smartphone may attempt to hold a call over Wi-Fi even when the internet signal becomes unstable, instead of smoothly handing over the session to a cell tower. This results in characteristic "robotic" voices and complete connection loss. In such cases, the only solution is to forcefully disable the feature.
⚠️ Note: Disabling VoWiFi does not disable the internet connection. Your phone will continue to use Wi-Fi for data transfer, but voice calls will be made over your carrier's standard cellular network.
It's important to understand that connection quality directly depends on the channel's bandwidth. If multiple devices are downloading files simultaneously, voice traffic priority may not work correctly. In this case, forced transition to LTE/3G will ensure a more stable conversation, as cellular networks have priority for voice traffic.
Technical details of VoWiFi operation
The VoWiFi protocol uses IPSec encryption to secure calls. If your router or ISP blocks certain ports required to establish a secure tunnel with MTS servers, calls may fail or be dropped immediately after dialing.
Disabling the feature on Android smartphones
In the operating system Android Settings may vary depending on the device model and shell version. Manufacturers often hide options in different menu sections. To get started, go to the device's main settings and find the section responsible for communications.
On most modern smartphones the path looks like this: open Settings, select the item Connections or Network and Internet. Next, look for the section Mobile networkThis is where the switch that activates Wi-Fi calling is usually located.
☑️ Check Android settings
If you don't find the item you need right away, use the settings search. Enter "Wi-Fi" or "VoWiFi" in the search bar. The system will automatically prompt you to navigate to the desired menu. On some models, for example: Samsung or Xiaomi, the option may be called "Wi-Fi Calling" or "Wi-Fi Calling".
It's worth noting that on some devices, this setting may be hidden if the SIM card doesn't support the feature or if the phone hasn't been certified by the carrier. In this case, even having the switch doesn't guarantee the service will work, but disabling it (if present) is still recommended for stability.
- 📱 Open the menu
Settingson your device. - 🔗 Go to the section
ConnectionsorNetwork and Internet. - 📶 Find the item
Wi-Fi callingand move the slider to the "Off" position. - 🔄 Restart your smartphone to apply the changes.
iPhone and iOS Settings
For users of products Apple Luckily, we have a more unified settings system. In iOS, the interface is virtually identical across all models, starting with the iPhone 5s and newer. To manage wireless calling, you'll need to access the cellular menu.
The algorithm of actions is simple: go to Settings, scroll down and select Cellular communicationsIn the menu that opens, find the item Wi-Fi callingIf you have a dual-SIM version of iOS, make sure you're in the settings for the SIM card (MTS) for which you want to change the setting.
After toggling the switch, the system may ask you to confirm the action. This is a standard security procedure, warning you that connection quality may be degraded in areas with poor coverage. Accept the warning, as your goal is to disable Wi-Fi for voice calls.
In some cases, especially after an iOS update, these settings may reset. It's recommended to check this setting periodically, especially if you notice unusual phone behavior during calls. It's also worth remembering that on iPhone, this feature is closely linked to FaceTime Audio, but disabling one doesn't always disable the other.
Manage services through your personal account and USSD
Sometimes, phone software settings don't work because the service is activated on the carrier's end. In this case, you need to access your plan management tools. For subscribers MTS There are several ways to control services: USSD commands, personal account, and mobile application.
The fastest way is to use a USSD request. Enter the following combination on your phone's keypad: *111# and press the call button. In the menu that opens, find the section related to communication services or the internet. However, there may not be a universal command to instantly disable VoWiFi, as this is often handled automatically.
A more reliable option is to use the "My MTS" mobile app. Log in to the app and go to the "Services" or "Price" section. There you can find and manage your active options. If you see a "Wi-Fi Calling" or similar service, simply disable it.
| Control method | Action | Comment |
|---|---|---|
| Phone settings | Disabling the slider in the menu | The most effective method |
| My MTS app | Section Services → Deactivation | Requires internet |
| Personal account | Web interface mts.ru | Conveniently from your computer |
| Service code | Dial *111# | Works without internet |
Compatibility and router issues
Often, the cause of unstable VoWiFi is not the phone or SIM card, but the home router. Some router models incorrectly process the data packets required for voice communication. This can lead to the phone constantly trying to register with the VoWiFi network, but the connection keeps dropping.
If you encounter this issue, try updating your router firmware. Manufacturers often release patches that fix VoIP protocol issues. It's also worth checking your security settings: sometimes firewalls or parental controls can block necessary ports.
⚠️ Note: Router interfaces and security settings may vary. If you're unsure about what you're doing, it's best to reset your router to factory settings or contact your internet service provider.
Another possible cause is the use of mesh systems. When switching between Wi-Fi hotspots within an apartment, Wi-Fi calls may be interrupted. In such homes, it is recommended to use one primary voice hotspot or completely abandon VoWiFi in favor of a cellular network if indoor coverage is good.
It's worth keeping in mind that some older router models are physically unable to prioritize voice traffic (QoS). In this case, if someone in the family starts watching a 4K video, your Wi-Fi conversation is guaranteed to degenerate into a jumble of inaudible sounds.
Impact of updates and resetting network settings
After updating your phone's operating system, network settings may become corrupted or conflict with new operator profiles. If you've updated Android or iOS If you're experiencing problems with calls, try resetting your network settings. This won't delete your personal data, photos, or contacts, but it will return your network settings to factory defaults.
To perform a reset on Android, go to Settings → System → Reset settings → Reset Wi-Fi, mobile network, and Bluetooth settingsOn iPhone, the path will be as follows: Settings → Main → Transfer or reset iPhone → Reset → Reset network settings.
After this procedure, the phone will re-request Wi-Fi passwords and re-register with the operator's network. This often helps clear out any incorrect configurations that prevent proper switching between connection modes. In most cases, this resolves the issue of freezing in VoWiFi mode.
- 🗑️ Resetting network settings deletes saved Wi-Fi passwords.
- 📡 Bluetooth pairing settings are reset.
- 📞 Cellular network and APN settings are reset.
- 💾 Personal files and apps remain in place.
⚠️ Important: Before resetting your network settings, make sure you remember the passwords for your home and work Wi-Fi networks, as you will need to re-enter them.
Frequently Asked Questions (FAQ)
Does disabling VoWiFi affect call costs?
No, the cost per minute remains the same as in your plan. Wi-Fi calls with most operators, including MTS, are billed as regular minutes in your plan, not as data traffic. Disabling this feature simply changes the voice transmission channel but does not change your rate.
Is it possible to disable VoWiFi for only one SIM card?
Yes, if you have two SIM cards in your phone. In the mobile network settings (on Android) or the Cellular section (on iOS), you can select a specific SIM card and configure the "Wi-Fi Calling" setting for each one individually.
Why is the Wi-Fi handset icon still on after disabling the feature?
The icon may persist for a while due to interface caching. Try turning on airplane mode for 10 seconds and then turning it off. If the icon remains, check that the toggle in the settings has actually been switched to "Off," as some shells require confirmation.
Does VoWiFi work when roaming?
Yes, but this depends on your plan and operator's terms. Often, Wi-Fi calls while roaming are charged the same as regular calls from your home network, which saves money. However, it's best to check with your operator before traveling, as these may change.
What should I do if the VoWiFi switch is grayed out and inactive?
This means the service isn't available on your carrier's end for your number, or your phone isn't certified for VoWiFi on the MTS network. Try restarting your device or contacting your carrier's support to check service availability.