COMPONENT AND FUCTION FINISH

13. VCO IC (Voltage Control Oscilator)
the function as frequency oscillator/generator that be sent to pass Tx(Tranceiver) and frequency that enter to pass part Rx (Receiver) so that being equal with radiated. beside that, this component also functioned as pulse voltage regulator from RF signal processor.

14. RX/TX 
as enter/out signal

15. LCD 
this component will functioned to display all activities from handphones, as media communication reads and write in handphone. 

16. KEYPAD 
this component functioneds as device input that give data command to cpu then processed and sent to other component related to handphone

17. INFRA RED 
infra red a tool that transfer data or program. But in general infra red used to send and receive data from computer to handphone or conversely. Infra red will work when facilities activate good in handphone and or in computer. But usually when computer that used kind laptop or notebox so this facilities detect of system operation at installation. Actually function infra red this is same as does data cable, only data cable direct linked will into handphone while infra red is not such. this apparatus work by using light infra red distance between handphone one with other may not far apart, must face to face, and doesn't shut a certain. 

18. BLUETOOTH 
this tool is used to transfer data or functioned as mediator between a equipment with other equipment. Facilities bluetooth exist in handphone usually used to send or get data from computer, handphone other, or conversely has also and use this facilities. The bluetooth function in handphone in principle same like infra red. simply procedure from bluetooth use frequency stripe or radiowave, for delivery distance or data acceptance doesn't like infrared, bluetooth has overplus can be used to send and get data concurrently at the time of same. beside that bluetooth has also surplus can be used without having to close to one another between sender equipment with receivers equipment, in general distance can achieve hundreds meter.

19. BATTERY 
the function as electricity current source to give electricity current in mobile phone. battery for handphone there what kind, that is: Nickel-Metal Hydrate (nimh), Lithium-Ion(Lion), and Lithium-Poly-Mer (Lipoly).