China Telecom Tianyi mobile phone quality problems; I'm from Sanshui, Foshan, and I applied for E in Foshan Sanshui Telecom Business Office Branch of China Telecom on120.

Let's see what happened to your mobile phone first! If it's because of the phone itself, and you don't spend it. You can ask the telecom company to change it for you! If you don't change it, you can complain to the next higher level. Because most business halls are private, only a few are owned by telecom companies. If you broke the phone yourself, you can only guarantee it.