I bought a Tianyu mobile phone in 2007. I don't remember the specific model. It's black and very small. It didn't take a few days to get a black screen, and frequent phone calls also got a black screen, but I didn't delay answering the phone, just didn't know who was calling. After a few days, the charging didn't work well, so I went to the maintenance point to repair it. But it was completely broken in less than a year. Two of my colleagues also bought Tianyu, but it completely broke down in less than a year. 1 1 year changed jobs. Coincidentally, my new colleague bought Tianyu with a big white screen. I said at that time, how can you buy Tianyu mobile phone? Otherwise, traveling in other places will be broken within one year, so I have to buy OPPO locally, and I will be made a joke when I come back. In short, Tianyu can't be bought.