Small Parts / Electronic Components of Mobile Phone and Their Function

Small Parts / Electronic Components of Mobile Phone: Identification, Faults, Function.

The PCB of a mobile cell phone has several small parts or electronic components. When learning mobile repairing, it is important to learn and understand how to identity these small parts or electronic components and understand their function. Identification of these small parts on the PCB of a mobile phone is easy if you know and understand some of the basic rules. It is also important to understand what to do if any of these small components is faulty.

Most of these electronic components are SMD (Surface Mount Devices). They don’t have any leads like thru-hole electronic components.

Electronic Components of a Mobile Phone

Electronic Components of a Mobile Phone

Small Parts / Electronic Components of a Mobile Phone: Identification, Faults and Function:

1. Boost Coil

Its size is little bigger than coil. It is found in black colour and looks like a large button. Its function is to increase current. If this coil gets damaged then it has to be changed.

Mobile Phone Boosting Coil

Mobile Phone Boosting Coil

2. Coil

It is found in any section of a mobile phone. It is found in many shapes and sizes. Coils are found in 2 colours: (i) Black and white; and (ii) Blue and white. It has binding of copper coil inside. It filters and decreases Current and Voltage.

Mobile Phone Coil

Mobile Phone Coil

3. Capacitor

3 types of capacitor are found in a mobile cell phone:

  1. Non-Electrolytic Capacitor: It is found in any section of a mobile phone. Its height is little more than chip resistance. It can be of gray, yellow or brown in color. It has no Positive (+) or Negative () side. It filters DC current.
  1. Electrolytic Capacitor: It is found in any section of a mobile phone. Its size is larger than non-electrolytic capacitor. It is found in 2 colors – (i) Orange with brown strip: and (ii) Black with white strip. The side with the strip is Positive (+) and the other side is Negative (). It filters and stores current.
  1. Network Capacitor: It is found in any section of a mobile phone. It is made from 2 or more Non-Electrolytic Capacitors.

    Mobile Cell Phone Capacitor

    Mobile Cell Phone Capacitor

4. Coupler

This electronic component is found in the Network Section of a mobile phone. It is of either black or white color and has 6 pins bent inside.

Function: It filters network.

Faults: If the coupler is faulty then there will be no network in the mobile phone.

Mobile Phone Coupler

Mobile Phone Coupler

5. Diode

Diodes are of 4 types:-

  1. Rectifier Diode: It is found in black color and converts AC Current to DC Current. It passes current in one direction. It does not pass current in reverse direction.

    Mobile Phone Rectifier Diode

    Mobile Phone Rectifier Diode

  1. LED: LED stands for Light Emitting Diode. It is found in white or light yellow color and emits light.

    Mobile Phone LED

    Mobile Phone LED

  1. Zener Diode: It is found in charging section. It filters and minimize current and passes forward. It acts as voltage regulator. Zener diode has fixed capacity like 4V, 6V, 8V etc.

    Mobile Phone Zener Diode

    Mobile Phone Zener Diode

  1. Photo Diode: It is used for Infrared. It captures Infrared Rays.

    Mobile Phone Photo Diode

    Mobile Phone Photo Diode

6. Regulator

This electronic component is found in any section of a mobile phone. It is of black color and has 5 or 6 legs. It filters current and regulates voltage.

Mobile Phone Regulator

Mobile Phone Regulator

7. Resistance or Resistor

There are 2 types of Resistors on the PCB of a mobile phone:

  1. Chip Resistance: It can be found in any section of a mobile phone. It is of black color. In some sets it is also found in blue and green colour. It is the smallest electronic components on the PCB of a mobile phone. It Decreases current and passes forward.
  2. Network Resistance: It can be found in any section of a mobile phone. It is made from 2 or more Chip Resistance.
Mobile Phone Resistor

Mobile Phone Resistor

8. Transistor

This electronic component is found in any section of a mobile phone. Transistor is of black color and it has 3 legs. It does the work of switching.

Mobile Cell Phone Transistor

Mobile Cell Phone Transistor

Video: Mobile Cell Phone Small Parts / Electronic Components

Basic Electronic Components and their Function

Electronic Components of Mobile Phone FAQs

A microchip, also known as an integrated circuit (IC), is a small SMD electronic component that contains a large number of transistors and other components. It is the brain of the mobile phone and controls all its functions, including processing data, managing memory, and controlling the display.

A capacitor is an electronic component that stores electrical energy and releases it when required. In a mobile phone, capacitors are used to stabilize voltage, filter out noise, and improve the performance of the power supply. They also help to maintain the charge of the battery and prevent it from draining too quickly.

A sensor is an electronic component that detects changes in the environment and converts them into electrical signals. In a mobile phone, sensors are used to detect motion, orientation, light, and sound. They help to adjust the brightness of the screen, rotate the screen when the phone is turned, and activate features such as auto-focus and proximity sensing.

Electronic components play a crucial role in determining the overall performance of a mobile phone. They affect everything from the speed of the processor to the quality of the camera and the battery life of the phone. The quality and reliability of the electronic components used in a mobile phone can determine how long it lasts and how well it performs under various conditions.

Related Posts:

Share This:

Santosh Das

Santosh is an Electronics Geek, Blogger, Young Entrepreneur and Founder of this Mobile Phone Repairing Website. Santosh possesses vast experience in the field of electronics, telecommunication, Soldering, SMT, ESD Safety, Keep visiting for daily dose of Tips and Tutorials.

Also Read:

73 Responses

  1. Umar says:

    How to check fault smd using a multimeter

  2. joseph mukuka says:

    ok

  3. Emmanet says:

    Thanks

  4. immatexinfo says:

    Hello sir infinix hot 6 earpiece not working I have change several yet is not working

  5. pramod pal says:

    dear tell me , oneplus 6 device ,issue reported dead after sw ota

  6. Sir how can I send photo of my phone PCB.
    I will be highly thankful to you.
    Tapeshwar

  7. Sir I have old phone lava iris 405+, during charging jack repairing. He remove some smd component, I don’t what they are. Touch is not working. Can I get image of PCB of touch screen section. To know missing component.

  8. favour says:

    pls sir , a capacitor beside the touch pad clip do get hot and which runs down the battery please whats the solution

  9. Hamson Yekin says:

    Please we need to talk. I want to have a deal with you.

  10. Satyendra says:

    Gentle person.i want study of mobile component diply. Do you suggest me a book.name .where to i can buy

    • I will suggest you to get enrolled in some good Institute and learn practically. It will not take more than 3 Months. Practical is better than theory.

      • Mayur says:

        I want to learn in-depth repairing of large and small pcb’s like computer, laptop and mobiles. So i can repair even a tiny fault that cause turn down a whole board. Where can i learn these all from can you please suggest me.

  11. Ralph Tech says:

    that is nice

  12. richard says:

    hello sir i have a note 4 and it just wont power own i try every thing an nothing at first it use to over heat and freeze then one day it went dead however when i connect it to the computer it connect but nothing else could it be the power ic or the capacitors shorts

    • Overheating means that there is some kind of SHORTING in the PCB. Replace the Battery Connector and Check. If the problem is not solved by Replacing the Battery Connector then clean the PCB with IPA or Alcohol or Petrol and Apply some Hot Air to the PCB and Check. If the problem is still there then the PCB has to be checked for SHORTING.

  13. anaturea says:

    Electronic components are basic electronic element or electronic parts usually packaged in a discrete form with two or more connecting leads or metallic pads.

  14. BODA MARU says:

    Thank for this one and many more other, please can i go ahead and print this article? because i found it worthy

  15. Kropson says:

    Thanks very much for this wonderful work. But please, like the other big part you didn’t let us know the function of fault of these small part of mobile phones. I mean, if they or any of them is faulty, what effect can it have on such phones.

    Audience, please is there any engr reading this and you stay in Ede, Osun State Nigeria. Please signify, we need to talk. 08064851625 call or whatsapp. Thanks.

  16. jitender says:

    very useful stuff this u was provided

    sir can u post more explanation about all components in mobile pcb with their function with pcb diagram

    i m waiting for ur post

  17. vamsi says:

    Thank you very much bro.

  18. churcz says:

    God bless you

  19. Deepak paul says:

    Sir, I am looking for a book of mobile hardware and software, can you suggest me where wil I get the book and which book is good..

  20. Godwin says:

    Thanx I really appreciate

  21. zunidu says:

    It a very good note I have ever read

  22. kripashankar says:

    such a good and very helpful information about mobile repairs. thanks sir.

  23. baah prince says:

    Mr. Santosh you are really Genus

  24. Gaurav Shekhawat says:

    Hi Mr.Das,seems to look like you have good knowledge in this field.
    I have a business order for you in this regard.
    Further we can talk more over e-mail,pls drop me a mail on [email protected]

    Regards- Gaurav

  25. Benjamin says:

    this is excellent

  26. kamlesh says:

    I want sim and memory card tray of sony Ericsson w350i where I can get

  27. Lawrence says:

    that’s really helpful thanks Mr

  28. INDU SHEKHAWAT says:

    LIKE IT, GREAT JOB, SUPERB, EXCELLENT, SPEECH LESS KNOWLDEGE, KEEP IT SIR

  29. Hisham alrashdan says:

    great job , please keep going on

  30. erick says:

    Fantastic,good notes ever.

  31. MAYA says:

    Very knowledgeable and wisdom filled in post

  32. Piyush says:

    Sir loved your Site knowelable.

  33. fashola says:

    That’s great work, I love it. plus keep it up

  34. brian says:

    What a powerful site I wish you can even add a picture direct from the cellphone when you explain.

  35. Md Liton Ahmed says:

    excellent

  36. kilfe says:

    Ithink it is the best note for mobile maintain ace.tank you

  37. search says:

    What’s up, just wanted to say, I loved this blog post.
    It was helpful. Keep on posting!

  38. ismail says:

    oh allah continue to bless the memory of this Mr GURU i mean sharer of this article,and cause his life to live best and beautiful on earth…..thk

  39. Bariche says:

    Really useful website. thanks and pls keep it up.

  40. mutethia says:

    gud one

  41. Gurdeep singh says:

    comits good to know mobile repairing…

  42. awil says:

    i much like to study all these course , so could i find

  43. Apullah Alfred says:

    Good job God bless you

  44. Hakeem says:

    You’re the best. .
    Thanks a lot…friend

  45. zain hardz says:

    Wt a helpful site it is..!!
    Plez keep It Up. Thanx a lot.

  46. thanks for your information, very useful information.

  47. super

  48. peter otinget says:

    thanks for your web site i am really enjoying it

  49. luhiga says:

    thanks alot do you assist to get the schematic for mobile phone.i need to buy

  50. ram says:

    best tips

  51. Frank says:

    Thats a good one

  1. March 11, 2019

    […] Small Parts / Electronic Components of Mobile Phone and Their Function […]

  2. August 2, 2019

    […] Electronic Components of Mobile Phone and Their Function […]

  3. August 2, 2019

    […] Electronic Components of Mobile Phone and Their Function […]

  4. August 3, 2019

    […] Electronic Components of Mobile Phone and Their Function […]

  5. August 5, 2019

    […] Electronic Components of Mobile Phone and Their Function […]

  6. August 6, 2019

    […] Electronic Components of Mobile Phone and Their Function […]

  7. August 9, 2019

    […] Electronic Components of Mobile Phone and Their Function […]

  8. October 6, 2019

    […] Using harsh detergentThis is a big no as this is too much for your phone. This can possibly cause erosions to small parts of the device. […]

Leave a Reply