Since swapping to 3 mobile I have not been able to use my phone via cellular data (without wifi) for messaging, email, online apps etc. this is despite full coverage. Live chats and several conversations with the three tech team have been unable to resolve this. I use an iPhone 15 pro. Have they sent the wrong kind of sim? They simply can’t tell me (the Apple Store has checked my phone and it’s almost new and fully working). Any guidance urgently appreciated. Thanks.
