The learning period is generally two to three months, and the learning time of mobile phone maintenance peers is about one month; There is a clear plan for the learning cycle, and it is also varied to go to training classes. The teaching level of training institutions is also uneven. If you are looking for a good reputation, the study fee is generally around 5000 to 10000, regardless of tuition. There are several issues to be clarified, such as whether to provide maintenance tools and consumables, and which tools can be taken away after learning.