I'm going to study in England soon, and I want to video chat with my family every day. Can domestic mobile phone cards use traffic in the UK?

Domestic traffic in the UK cannot be used. You have to buy a foreign traffic package, but it will be very expensive.

Before, a friend said that there is a mobile app called Worry-Free, and it is very affordable to buy traffic packets in it. 24 hours is not limited. If you receive the video, you can call and move this big-name operator anytime and anywhere. The foreign signal is also very good, so there is no need to change the card. Just register your mobile phone number with the app.