Prestigio PSP5457DUO Android 4.2.2 does not connect to my academic network
This is something you should ask the IT support people at your university about. Most mysterious problems like this are caused by security settings on the Wi-Fi network itself. Probably it is MAC-filtered, so only devices that have been registered with the network administrators are able to connect. You might have forgotten registering your previous phone if you've had it for a long time.