Scans: 4. How do mobile phones work? Why is it called a cellular mobile communication? Why do some airlines ask passengers to turn off their cell phones? How are physics and chemistry involved in the design of the phone? What type of fundamental and practical knowledge will be useful for me? Objective: To systematize multi-vector knowledge which is used in the design of mobile phones. ------------------------------------------------------------------------------------------------------ Level (grade) 7 STEM Level (grade) 8 STEM