You can still login to the Virgin Media shared Wifi if you cannot install the App on your device.

You will need the following –

<username> your Virgin Media account username e.g. fred@some.domain
<password> your Virgin Media account password

To Login –

Username – vmedwifi/fred@some.domain
Password – <password>
EAP Method – TTLS
Phase 2 Authentication – MSCHAPV2

Note you must have a Virgin Media account/contract to use this service.