I turned on my phone for it to tell me it was going to restart, and it restarted saying something about a local sim and it set the home page on chrome to be my network provider (I was connected to uni WiFi and its not a virus as it had an authenticated certificate signed as expected).

My question is, is it normal for the sim card to have some control over a phone (I thought it was the other way round). The phone was bought as a sim free thing and then I got the card later...