General recommendation: for all features to work correctly on a mobile device, it is recommended that the operating system (Android, Windows Mobile or iOS) is updated to the latest version.
Further troubleshooting steps:
- Check whether “airplane mode” is disabled on the device. If it is on, turn it off.
- Check whether any software is installed on the device that could interfere with the default Wi-Fi client (e.g. alternative Wi-Fi clients, VPN clients, etc.). If so, disable or remove it.
- Verify that the sign-in credentials entered for the wireless network you want to connect to are correct. How to do this is described in the “Configuring a wireless network on a mobile device” tab here.
- Reset or restart the device.
- Select “Forget (the chosen) network” (e.g. Eduroam) and re-enter the sign-in credentials (step 3).
- Check the network settings received (IP address, default gateway, etc.) if a connection to the wireless network has already been established.
How to verify that Wi-Fi is working?
- Check connectivity (browse the web, check the response time of a server/website using PING).
- You can also verify the connection by testing its speed using online tools (e.g. http://speedtest.net).
Troubleshooting will be easier if you pay attention to error messages shown when establishing the network connection (e.g. “Authentication failure”) and to unusual icons (e.g. an exclamation mark on the connection status) shown by the device. Sources:
- http://www.smartmobilephonesolutions.com/content/cant-connect-to-wifi-on-android-smartphone
- https://www.cnet.com/how-to/common-wi-fi-problems-and-how-to-fix-them/
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