Avoid re-login to eduroam for Linux-machines

As other Linux-users I experience the problem, that I have to re-connect to the eduroam Wireless network every time I restart the laptop or even after waking it up from hibernate or sleep state. In that case I have to re-enter the password although it is set to be already stored along with the other settings for the eduroam connection. While this is not a serious problem it is still cumbersome. My laptop-settings are to go to sleep-mode automatically when the lid is closed to save battery power, so even during one course there might be the necessity to re-authenticate several times. What settings are needed to overcome this problem?

Getting WLAN access with iPhone at the university

I have an account jdorn@mobil.tuwien.ac.at that I use on a Laptop to access the closed TUWIS WLAN. In an Internet browser I enter account and password. Then I have access to the Internet for a limited period of time. On my iPhone the entering of the required data is too cumbersome.
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