Do mobile phone technicians do maintenance?

Jiujiwang mobile phone technician is engaged in mobile phone maintenance. Jiuji mobile phone technician is one of the main staff of Jiuji Network Company, responsible for mobile phone maintenance and mobile phone related consultation. These technicians usually have rich experience and skills in mobile phone maintenance and can deal with all kinds of mobile phone failures and problems. Their duties include consulting customers, installing mobile phone software, dealing with mobile phone software and hardware problems, and updating and debugging mobile phones.