If your Android phone keeps connecting to open networks at airports, cafés, and malls, you are not alone.
Learning how to turn off auto join public WiFi on Android can improve privacy, reduce security risks, and give you more control over when your device uses wireless networks.
Why Android auto-joins public WiFi
Android is designed to make network access convenient.
When Wi-Fi is enabled, the system may remember saved networks, suggest nearby hotspots, or connect to open networks that match previous preferences.
On some devices, carrier or manufacturer features also influence automatic Wi-Fi behavior.
This convenience can become a problem in public places.
Free hotspots often have weak security, poor encryption, or misleading names.
An automatic connection can expose your traffic to captive portals, man-in-the-middle attacks, or tracking by network operators.
How to turn off auto join public WiFi on Android
The exact menu names vary by Android version and device brand, but the goal is the same: disable automatic connections to open or saved public networks.
1. Turn off automatic connection for known networks
Many Android devices let you disable auto-connect for individual saved networks.
This is the most direct fix if your phone keeps joining a specific hotspot.
- Open Settings.
- Tap Network & internet or Connections.
- Select Wi-Fi.
- Tap the network you do not want to join automatically.
- Look for Auto-connect, Connect automatically, or a similar toggle.
- Turn it off.
On some phones, you may need to tap the gear icon next to the saved network, then open Advanced or Network details.
2. Disable Wi-Fi scanning and network suggestions
Android can scan for nearby networks even when you are not actively browsing Wi-Fi settings.
That scanning can trigger suggestions or make public hotspots easier to join.
- Go to Settings.
- Open Location or Security & location depending on your device.
- Find Wi-Fi scanning and turn it off.
- Also review Network notification or Wi-Fi preferences.
If your device offers Wi-Fi suggestions, disable them.
This reduces the chance that Android will prompt you to join nearby public networks or connect based on past usage.
3. Stop automatic join to open networks
Some Android builds include a feature that automatically connects to open networks when no better connection is available.
If your device has this option, turn it off inside Wi-Fi preferences.
- Open Settings > Network & internet > Wi-Fi.
- Tap Wi-Fi preferences or Advanced.
- Disable options such as Connect to open networks, Auto-connect to open networks, or Turn on Wi-Fi automatically.
Not every phone includes the same labels, especially across Google Pixel, Samsung Galaxy, Motorola, OnePlus, and Xiaomi devices.
If you do not see these settings, use the device search bar inside Settings and search for auto connect or Wi-Fi preferences.
4. Forget public networks you do not trust
If you previously joined a café, hotel, or airport network, your phone may still prioritize it when you return.
Forgetting the network removes saved credentials and prevents automatic reconnection.
- Open Settings > Wi-Fi.
- Tap the saved network.
- Select Forget or Remove.
This is especially useful for networks with generic names such as “Free WiFi,” “Guest,” or location-based SSIDs that may be reused by multiple venues.
Device-specific places to check
Android is highly fragmented, so the path to disable auto join may differ by manufacturer.
These common routes can help.
Samsung Galaxy
- Open Settings > Connections > Wi-Fi.
- Tap the three-dot menu or the Wi-Fi settings icon.
- Review Intelligent Wi-Fi, Auto reconnect, and network-specific auto-connect settings.
Google Pixel
- Open Settings > Network & internet > Internet.
- Choose a saved network and disable Auto-connect if available.
- Check Network & internet > Internet > Network preferences for scanning and suggestions.
OnePlus and other OEM skins
- Open Settings > Wi-Fi & network or Connections.
- Look for Wi-Fi assistant, Smart Wi-Fi, or Auto connect.
- Turn off features that switch networks automatically.
Security settings that help on public WiFi
Turning off auto join public WiFi on Android is only one part of safer connectivity.
Public hotspots can still be risky even if you connect manually.
- Use a VPN: A reputable virtual private network can encrypt traffic between your phone and the VPN server.
- Prefer HTTPS: Most modern apps and websites use TLS, but avoid entering sensitive data on unsecured sites.
- Disable auto-sync on risky networks: Limit background account syncing when using public Wi-Fi.
- Keep Android updated: Security patches reduce exposure to known vulnerabilities.
- Turn off sharing features: Review Nearby Share, file sharing, and hotspot settings.
For business or travel use, a mobile data connection or trusted hotspot is usually safer than relying on public infrastructure.
What to do if your phone still reconnects
If Android continues joining public Wi-Fi after you changed settings, check for these common causes:
- Carrier-assisted Wi-Fi: Some mobile plans enable automatic hotspot connection features.
- Device management profiles: Work or school enrollment can enforce network behavior.
- Third-party apps: Wi-Fi manager apps may override system preferences.
- Saved captive portal access: Some networks reconnect after authentication until manually removed.
Review installed apps, enterprise profiles, and any vendor-specific connectivity tools.
If necessary, reset network settings, then reconfigure only the networks you trust.
Best habits for safer Android Wi-Fi use
Knowing how to turn off auto join public WiFi on Android is useful, but consistent habits matter more over time.
Treat open Wi-Fi as a convenience, not a default.
- Join public networks only when needed.
- Remove saved public SSIDs after each trip.
- Keep Bluetooth off when you do not use it in crowded places.
- Check the exact network name with staff before connecting.
- Use two-factor authentication for email, banking, and cloud accounts.
These steps reduce the chance of accidental exposure and help you stay in control of where your Android device connects.