I recently traveled & while staying with a friend I noticed I had picked up a hitchhiker, xfinitywifi. While using my phone & the internet, she asked me why I hadn’t asked her for her wifi password yet. Background - I had been in an airport. Could someone tell me: 1) how this got on my phone, 2) how can I protect my phone from hitchhiker wifi services and 3) how do I get this off of my phone. xfinitywifi may be a fantastic company - I don’t know - but I didn’t invite it.