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  Cell Phones and Their Maintenance

Study of Cell Phones and Its Maintenance:

To make out regarding to the working of the cell phone and its maintenance.

Components Needed:

S.No.

Name of Component/ Apparatur

Quantity

1.

Cell phone

1

Principle of Cell phone:

Cell phone gives a wireless service that is hand held phone with built in antennas when we talk in a cell phone; cell phone registers our voice and converts the sound into radio waves. The waves travel by the air and reach the base station that send the call though the network and makes the contact with the person whom we wish to speak.

Keys and parts of the Cell phone are as follow:

1. ON and OFF:

To switch the phone ON or OFF, Press and hold the power key.

2. Display:

While we switch on the phone we obtain the configuration settings on the display like

a) Signal strength

b) Battery change status

c) Indicators (Message, Lock, alarm etc..)

d) Name of network

e) Time and Date

f) Function of left, right and middle Navigator (Navi) Key.

3. Key pad:

Press the numbers that are in the key pad to call the person

4. Call key:

While we wish to make a call to a person, choose the number from key pad an call

register that we already kept in the save mode. Then press the call key.

5. Navi key:

Navi key is a 4-way scroll key and middle set section key. By using this we can assign the other

function from a predefined list.

Select menu > Settings > My Shortcuts > Navigation

6. Left and right selection key:

To choose a function from the list, Select menu > Settings > My Shortcuts > left

selection key or right selection key. To choose add or remove left key is used, To exit the function right key is employed.

7. END key:

After the speech ends we press the end key at one time we also switch off the phone

by using this key.

8. Microphone:

We speak via the micro phone that is in the lower side of the cell phone. It converts the sound wave into electrical wave or radio wave.

9. Charger Connector:

A user can charge the cell phone battery by using this provision the cell phone battery using provision kept on the sides. We connect the charge wire.

10. FM Connector:

FM  radio  relies  on  antenna  another  than  the  wireless  device  antenna. A well-matched head set an enhancement requires to attached, for the FM radio to function appropriately.

11. Ear piece Speaker:

We can hear the voice through the speaker that is kept on the upper side of phone.

12. Camera Lens

Take images or video clips along with the built in cameras. To make use of the still picture function select menu - media - camera. Cell phone can take picture resolution up to provided data. The phone saves the video clips on the memory card or in the memory of the phone.

Install SIM card and battery:

To take out the back cover of the device, press and slide the cover. Open the SIM card holder, insert the SIM card along with backside and close the SIM card holder. The similar way, observe the battery contacts and insert the battery. Slide the back cover into its place.

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