You can buy it yourself. That mobile phone is Tianyi's, 200 each, voluntary. But it still depends on whether you apply for broadband after entering the university. It is very convenient for that mobile phone to apply for a network cable, because the campus network of Jiangda University is not slow, and Tianyi has the fastest network speed. If you don't want to apply for broadband network cable and use Tianyi's network in the future, you don't need its mobile phone. If you want to have a faster network speed, you should buy one of its mobile phones, because only Tianyi's number can handle its broadband service.