Hello,
In case of iOS you'll definitely have to use the "iPhone Konfigurationsprogramm" (which is no longer availabe at apple or supported at all but still works well with iOS 5,6,7,8) or the replacement tool but that is only available on MacOS. If you manually install the certificates you'll experience many weird problems like "device is connected to wifi but super slow or no data is flowing at all".
He doesn't have to use that tool. There are other, multi-platform tools which create those configs. You should maybe read http://freeradius.org/enterprise-wifi.html which among others points you to the Enterprise Network Configuration Assistant Tool https://802.1x-config.org - or for eduroam customers, https://cat.eduroam.org. Greetings, Stefan Winter -- Stefan WINTER Ingenieur de Recherche Fondation RESTENA - Réseau Téléinformatique de l'Education Nationale et de la Recherche 6, rue Richard Coudenhove-Kalergi L-1359 Luxembourg Tel: +352 424409 1 Fax: +352 422473 PGP key updated to 4096 Bit RSA - I will encrypt all mails if the recipient's key is known to me http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xC0DE6A358A39DC66