When you go to Guangzhou to study, what kind of calling card is cheap and has a large flow, such as sending free text messages.

I think you should decide for a while before changing it, so that you can know what kind of card package you need more. General colleges and other schools have student cards and 3G local cards, which are quite favorable. Some of them buy packages to send wireless network cards. However, my classmates who went to school in Guangzhou basically changed their Unicom cards. It seems that they all rented local cards in 10. It is more effective for you to consult seniors or business halls after school starts. If it is not a local card, the mobile dynamic zone may be suitable for you. There are two kinds of M-Zone: online chat card and SMS package, and the monthly rent is 19 yuan. The online chat card sends 100M traffic a month, and it costs more than 20 cents to make a phone call 1 minute. Send SMS card to 130 for one month. You can choose an online chat card and set an e-mail address on 139 at the price of 5 yuan, which contains 30 free short messages every month, plus 50 short messages in May, it will be 80. If you use an Internet chat card to get a good signal, just download free text messages or other things. You don't have to open the short-term package. I hope I can help you. It's best to decide for a while before considering what card to change.