1: If you want to learn, I suggest you go to Shenzhen or Guangzhou to find out, where the electronic market is developed and mobile phone maintenance is relatively strong.

2. In addition, Huaqiang North in Shenzhen has the largest electronic market in China, and there is also a home improvement and mobile phone school nearby, which seems quite good. You can learn about it through Baidu. The so-called know yourself and know yourself.