There is a lot of mobile phone maintenance training. For example, when I was studying in Hangzhou Huali Computer Maintenance Training, this company also had mobile phone maintenance training, and the tuition fee seemed to be 1500 yuan. But I majored in computer maintenance, and I feel good. You can learn technology. I haven't learned mobile phone myself, and my classmates say it's very simple, much simpler than computer maintenance. This training is good, you can go and have a look.