If your university is not in your hometown, and these two calling cards are handled in the business hall there, you are an extroverted person who likes to make friends at school and wants to join the student union and various societies at school, then I suggest you handle a campus calling card at school. In this way, you don't have to pay roaming charges when you make phone calls with classmates who also apply for campus phone cards at school, which can save a lot of money.

If your university is in your hometown, you like to use social software such as WeChat to contact your classmates and friends, but you don't like making phone calls or texting. If you have, you can use your original phone card instead of the campus phone card.

These are my suggestions for reference only. I hope my answer can help you and make you satisfied.

Finally, I wish you a happy life and success in your studies.