Metro rides often automatically connect your smartphone to free city networks. In Moscow, St. Petersburg, and other major cities, the system is configured so that your device tries to connect to access points. MosWiFi, Metro Free WiFi or Yandex Wi-Fi immediately after unlocking the screen. For many users, this creates discomfort: constant notifications about the need to log in, interruptions to primary traffic, or simply an unwillingness to share geolocation.
There's a common misconception that this feature can only be disabled in the router's settings or through your telecom operator's account. In fact, it's managed exclusively on the client side, that is, on your smartphone. Disabling automatic connection — This is a standard procedure that does not require deep technical knowledge, but requires attention, since operating system interfaces are constantly updated.
In this article, we'll detail the steps for various platforms, explain why your phone automatically accesses the network, and provide step-by-step instructions for blocking this process. You'll learn how to not just disconnect, but completely block your device from initiating contact with public subway hotspots.
Why does my smartphone automatically connect to Wi-Fi in the subway?
The main reason for unwanted connections is a feature called "Connectivity" in Android. "Connect to open networks" (Connect to open networks), and in iOS, "Ask to Join Networks." Operating system developers implement these algorithms to improve the user experience, believing that free internet is always better than no internet. However, in dense subway traffic, where public Wi-Fi speeds are often slower than mobile 4G/LTE, this feature becomes more of a hindrance.
In addition, many mobile operators and gadget manufacturers enter into agreements with city Wi-Fi providers. For example, iPhone owners may encounter the feature Wi-Fi Assist, which tries to optimize traffic by switching between networks. On the subway, this results in the phone constantly "jerking" as it tries to find the best access point among dozens of identical SSIDs.
It's important to understand the difference between a simple open network and a network requiring SMS authentication. In the metro, networks that require a phone number or confirmation in the app are most common. The system marks these connections as "verified" after the first authentication and attempts to reestablish them whenever possible.
⚠️ Note: Some banking apps or corporate security gateways may block financial transactions if they detect a switch to public Wi-Fi, even if it's not actively used. Disabling this feature improves the stability of secure apps.
Disabling Auto-Connect on Android: Step-by-Step Instructions
In Android, the network management process may differ depending on the OS version and the installed shell (MIUI, OneUI, ColorOS). However, the basic algorithm remains the same. You need to go to the section Settings → Connections → Wi-FiIt's important not to simply turn off the Wi-Fi switch, but to go into advanced settings.
Find "Manage networks" or "Advanced Wi-Fi settings." In modern versions of Android (10, 11, 12 and above), there is an option Connect to open networksIf enabled, the phone will scan the airwaves and attempt to connect to any available signal, including the subway. Disable this switch.
Next, you need to delete the saved metro network profiles. In the list of available networks, find MosWiFi_Free, Metro_Free_WiFi or similar names. Click the gear icon or long-press the network name and select "Forget" or "Delete"This action is critically important: as long as the profile is saved, the phone will consider the network trusted.
☑️ Check Android settings
Xiaomi and Samsung users may have a separate app called "Wi-Fi Assistant" or "Smart Network Switch." Open it and make sure there are no exceptions for city networks. Sometimes, smart algorithms automatically whitelist popular SSIDs, ignoring the main settings.
iPhone and iOS Settings: Blocking Public Networks
Apple's ecosystem has a more rigorous approach to security, but there are still features that can be disruptive. Settings → Wi-FiFirst of all, check if the switch is turned off. Auto-connection (Auto-Join) for specific networks. If you've ever connected to Wi-Fi in the subway, your phone has saved this profile.
Click on the blue information icon (i) next to the name of the metro network (for example, MT_FREE). In the menu that opens, find the "Auto-Connect" option and toggle it off. This will prevent your iPhone from initiating a connection to this access point, even if it's within range.
Also worth paying attention to is the function Private Wi-Fi Address (Private Wi-Fi address). While it's more of a privacy concern, its active use in public places sometimes causes conflicts with captive portals (login pages). For networks you don't plan to use, it's best to simply remove them from the list of known networks.
If you are using iOS 15 or later, check your iCloud settings. In the section Settings → [Your name] → iCloud Make sure Wi-Fi key syncing doesn't restore deleted profiles from your other Apple devices. This is a common cause of a network being deleted on an iPhone, only to have it magically reappear after syncing with an iPad.
What to do if the network is not deleted?
Sometimes the network profile is blocked by system processes or MDM profiles (if the phone is corporate-owned). In this case, resetting the network settings will help, but this will delete all saved passwords. Navigate to: Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
Specifics of Yandex Wi-Fi networks and telecom operators
Networks that require authorization via a SIM card or Yandex account deserve special attention. Providers like Yandex Wi-Fi often use technology Passpoint or certificates for automatic authorization. If you've installed the Yandex app or a carrier profile for metro access, disabling regular Wi-Fi may not help.
You need to go to the certificate settings. On Android, this is the section Settings → Security → Encryption & Credentials → Trusted CertificatesFind the certificate associated with your Wi-Fi provider (e.g., Zao NWT or similar names) and delete it or distrust it.
Subscribers of the "big three" mobile operators (MTS, Beeline, Megafon, Tele2) often use automatic authentication by phone number. To disable this, you don't just need to change your phone settings. You need to log into your mobile operator's personal account or send a USSD command to disable the "Wi-Fi Autopayment" service or a similar option.
| Operator / Provider | Lock type | User action |
|---|---|---|
| Yandex Wi-Fi | Application/Certificate | Delete the certificate in the security settings |
| MTS Free WiFi | Personal account / USSD | Disable the service in the "My MTS" app |
| Beeline Wi-Fi | Automatic SIM connection | Disable data access in SIM settings |
| MosWiFi (City) | Saved profile | Select "Forget network" in Wi-Fi settings |
Radical Methods: Reset and Profiles
If standard methods don't help and your phone continues to be annoying, you can resort to more drastic measures. The first option is a full network reset. This will reset all Wi-Fi, Bluetooth, and mobile network settings to factory defaults. You'll lose saved passwords, but you're guaranteed to get rid of any hidden Metro connection profiles.
The second method is relevant for corporate smartphones or devices on which special configuration profiles were installed. Go to Settings → General → Profiles and device management (The path may vary.) If you see a profile with the name of your mobile operator or city Wi-Fi network, delete it.
The third option is to use third-party firewall apps for Android, such as NetGuard or NoRoot FirewallThese allow you to block access to the Wi-Fi module for specific system processes. You can prevent the Android system from scanning for networks in the background, while still allowing you to manually enable Wi-Fi if you choose.
⚠️ Note: Resetting network settings will also delete all paired Bluetooth devices (watch, headphones, car). Be prepared to re-pair your devices after this procedure.
Security issues when using public Wi-Fi
Disabling auto-connection is not only a matter of convenience, but also an element cyber hygienePublic subway networks are a favorite spot for hackers using attack methods like Man-in-the-MiddleAn attacker can create an access point with the name Metro_Free_WiFi, which looks legitimate but is designed to intercept data.
When your phone automatically connects to such a network, it may transmit hashes of previously used networks or attempt to establish a secure connection, which will be intercepted. Even if you don't enter passwords, your traffic metadata can be analyzed.
Furthermore, constantly scanning for networks drains your battery. The Wi-Fi module consumes significant power scanning for channels, especially when moving, as the phone constantly switches between cell towers and Wi-Fi hotspots. Disabling this feature will extend your device's battery life while on the go.
Frequently Asked Questions (FAQ)
Does turning off Wi-Fi affect the operation of the navigation system in the metro?
No, it doesn't. Navigation systems (Yandex.Maps, Google Maps, 2GIS) in the subway rely primarily on GPS (if there's a signal from the surface) or cell tower triangulation (LBS). Wi-Fi is used for precise positioning only on the surface or in large shopping malls; it's not critical for navigation in subway tunnels.
Is it possible to turn off Wi-Fi only for the metro, leaving it for home?
There's no direct geofencing for turning Wi-Fi on/off in the default settings. However, you can use automation (Shortcuts on iOS or Tasker/Bixby Routines on Android) to have your phone turn off Wi-Fi when connected to cell towers, such as those found in subways, or according to a schedule.
Why does Wi-Fi in the metro reconnect after rebooting my phone?
This means the network profile is saved in the device's memory and the "Auto-connect" flag is enabled. You need to "Forget" the network, not simply disconnect. Also, check if your settings are syncing via the cloud (iCloud or Google Account) from another device.
Is there a fee for connecting to Wi-Fi in the metro?
The networks themselves MosWiFi or Metro Free Free. However, if you have automatic authorization enabled through your mobile operator, paid options are theoretically possible if you're not covered by your plan. Always check the terms and conditions of your plan with your mobile operator.
How do I check if my phone is broadcasting Wi-Fi?
Modern smartphones have a "Tethering" or "Mobile Hotspot" feature. Make sure it's turned off. Some models (especially Xiaomi and Huawei) also have a "Wi-Fi Sharing" feature, which allows you to share passwords with contacts. It's best to disable this feature in the Wi-Fi settings.