Understand the basic knowledge of various components of mobile phones, including: identifying various components, learning and understanding the principles of components, and mastering the measurement methods. Mastering the similarities and differences of various mobile phone brands and models, as well as learning how to unlock or install system of phone software.Understand the circuit principle, analyze the working principle and basic circuit knowledge of mobile phones. Learn how to identify circuit diagram, read diagram, and draw diagram. Learn various professional terminologies, including names, concepts, graphics and text symbols, unit systems of mobile phone.Be able to use tools including air guns, soldering tool, measurement instrument, frequency meters and other mobile phone maintenance tools and instruments, and also master the disassembling and soldering techniques of mobile phone components. Watch more mobile phone repair videos, and pay attention to learning from others' methods of analysis and judgment. You can't just watch it, you must do it diligently. To become a mobile phone repair master, you must continue to learn and update your skills. About OriwhizORIWHIZ is a mobile phone LCD/OLED screen and other phone spare parts' manufacturer（factory）,we offer OEM and ODM service to customers all over the world.Our products have ISO9001,CE,FCC,ROSH certificate.All of our products are manufactured by brand new materials and 100% quality test before shipping.We promise our best quality products will be delivered to our clients on time.We have professional customer service and welcome inquiry any time. Our main products include:iPhone LCD,iPhone Charging Port,iPhone Front Camera,iPhone Back Camera,iPhone ear speaker,iPhone Battery,etc.Not only iPhone related products,we also have Samsung,Oppo,Vivo,etc.