What are major functional components of a mobile system ?

The major functional components of a mobile system are as follows:

1. Mobile Processor (Mobile CPU) — This is the brain of a smartphone. It has two sub-processor types:
   (i) Communications Processing Unit — responsible for making and receiving phone calls.
   (ii) Applications Processing Unit (APU) — responsible for governing, controlling all types of operations taking place on a mobile system by running various apps.
2. Display Subsystem — responsible for providing display facilities, touch sensitive interface and touch sensitive keyboards.
3. Camera Subsystem — designed to deliver a tightly bound image processing package.
4. Mobile System Memory — consists of RAM (work memory) and ROM (mobile's internal storage).
5. Storage — external storage of a mobile system.
6. Power Management Subsystem (Battery) — responsible for providing power to a mobile system.