My brother bought a mobile phone and it broke down in less than a month. I can't fix it if I take it, and I can't tell my family. I am very helpless. I want to talk about it. ...

Did your brother buy it for you privately? If there is, you can tell your brother directly (it is always a waste of time), and then ask your brother to take the shop your brother bought for repair or ask him why it broke down in less than a month. If the family agrees, tell the family directly, and then take it to the original store for repair. If it can't be repaired, go to him. If you break him in less than a month, he will definitely give you an explanation. . .