Ask the brothers and sisters of Central South University for help! I am a freshman. What kind of calling card is better for telecom, mobile and China Unicom after I get to school?
Mobile ~ ~ At first, China Unicom may make you look more favorable in terms of cost, but gradually you will find that the mobile campus group is the most popular among students, that is, the mobile campus group is very large and the calls in the group are free. It seems that there are tens of thousands of people using mobile phones in central and southern China, and all internal calls are free! Convenient! Finally, the phone bill is no more than Unicom!