How do I tell my parents that I want to change my mobile phone?

The best way is to tell the truth, but with a little skill. You can talk to your mother about other things now. When your mother is happy, you can complain. You can say: "My mobile phone is very stuck, and it takes a long time to look up information. What should I do?" , throw the problem to your mother. If your mother agrees to buy a new mobile phone, you ask, "Then give me a mobile card by the way!" If you don't agree, don't show your temper and say it with a smile while acting coquettishly. There are a bunch of reasons for you to change your mobile phone. Remember to explain it carefully. Even if you are scolded, don't be upset immediately. The key is to give it a hard time. As long as you really need it, plus you study well, I think your mother will agree.