Network Manager can connect to WPA2 PEAP networks just fine, as shown in bug 1104476.
indicator-network is not responsible for authenticating to networks at all.
But since you link to a page about the Aquaris E4.5, I guess you're talking about Ubuntu Touch, which currently does not have UI for authenticating to WPA Enterprise in general. This is bug 1241986.
Network Manager can connect to WPA2 PEAP networks just fine, as shown in bug 1104476.
indicator-network is not responsible for authenticating to networks at all.
But since you link to a page about the Aquaris E4.5, I guess you're talking about Ubuntu Touch, which currently does not have UI for authenticating to WPA Enterprise in general. This is bug 1241986.