Configure WLAN "eduroam" - iPhone/iPad

First download the configuration profile direct on your iPhone/iPad from here or ask your department's IT-Staff to send the profile via email.
Download the profile and you’ll see a message like profile downloaded, permit?. Proceed with Permit to load profile in to your settings app.
Open the settings app
Go to Profile downloaded and iOS is asking you to install this profile

Insert you screen lock code, acknowledge and proceed
On the next screen insert your MPI EVA USER_NAME@eva.mpg.de
Proceed with inserting your MPI EVA password and continue

Go to Wi-Fi settings in the settings app and select eduroam as wireless network.
You are now connected with eduroam