Of course you have to answer it. The strange call is just not saved in your mobile phone, but it does not mean that it is not an important call, so under normal circumstances, I think it is still acceptable to answer such strange calls. , otherwise, you may miss some more important things.

First of all, if you are a college student, of course you often use WeChat or QQ in school. When you make calls, you also use data through QQ or WeChat, some voice and video calls, etc. Ways to communicate, the phone will definitely be used less, but if one day you may not care about you or there is no traffic on WeChat, others can only contact you through the phone, your phone Maybe his phone number isn't saved. In that case, wouldn't you answer it?

If some people need to contact you through other methods, but they don’t have your QQ or WeChat and can only contact you by phone, in this case, I don’t think you should answer it?