1. Choose a level of DIFFiculty and click "Play". 2. Read the customer's complaint and try to diagnose the problem. 3. Use the Mouse to click on the toolBox and select the tools you need to repair the phone. 4. Use the tools to fix the phone and Follow the on-screen instructions. 5. When the phone is fixed, click the "Submit" button to move on to the next level. 6. Complete all levels and become a master phone repair technician!