If you use the wireless network eduroam and haven't used the automatic settings before, you need to change the eduroam settings in all your devices (phones, computers, tablets) before February 25, 2019. There are automatic settings for different devices and you can change your settings now.
More information about the eduroam changes
N.B. If you have a device that does not support automatic configuration, you will have to accept a new certificate. This applies mainly to Linux or Android users and most typically you will get a pop-up window where you can accept the certificate.
Connect to eduroam with Windows 10 (automatic configuration)
Connect to eduroam with Windows 7 (automatic configuration)
Connect to eduroam with Mac OS X (automatic configuration)
Connect to eduroam with iPhone or iPad (automatic configuration)