I am currently on holiday in Italy. My phone is enabled for roaming and I am able to send and receive calls and texts. However, despite having bought a travel pass I am unable to connect to anything that will let me use mobile data. I have restarted my phone multiple times, have switched off automatic carrier selection (otherwise I get no signal for calls and texts) and have tried in multiple locations so it isn't just that there is no signal where I am staying. I've even tried with my phone sat on top of the mifi in the apartment!