This occurs when the automatic WiFi settings on your device are giving priority to a connection to a public WiFi signal over your own router's WiFi. If you have connected to a hotspot in the past, it might have been automatically added to the list of your preferred wireless networks.
All you need to do to solve this is get your device to forget the network. Here's how for:
If you're using other WiFi connection software, check the user documentation.
- Click the Network icon on the lower right corner of your screen.
- Click Network settings.
- Click Manage Wi-Fi settings.
- Under Manage known networks, click the network you want to delete.
- Click Forget. The wireless network profile is deleted.
- Go to the WiFi section of your settings menu.
- Find the network you want to get rid of.
- Long press it, then chose Forget.
- Click on WiFi in the menu on the left.
- Click Advanced located at the bottom right of the pop-up window.
- Select the public network you want to delete.
- Click the minus sign.
- Click OK.
- Going to Settings.
- Selecting WiFi.
- Press the arrow next to the public network.
- Select Forget this Network.
- Set Auto-Join to OFF.