Parts of a Mobile Cell Phone and Their Function (Big Parts)

Santosh Das

Santosh Das is an Engineer, 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, and electronics manufacturing tools, equipment and consumables. Santosh left his job in 2014 and started his own Private Limited Company that deals and supplies PCB Assembly and Rework Tools, Equipment and Consumables. Keep visiting for daily dose of Tips and Tutorials.

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107 Responses

  1. Jordan says:

    What do i do if i try to charge my phone but the end piece is missing

  2. david says:

    i appreciate but can i get some of ur tools shipped to Nigeria?

  3. SWAPNIL ADEP says:


  4. RK singh says:

    My Samsung note 4 sometimes boots, sometimes doesn’t. For rebooting second time, I have to wait and remove battery.. Keep de-energised for some time then restart but it is not stable. Please advise

  5. Dauda says:

    I have tecno c5 with lines on display sometimes shows well and brings back that lines whats the problem

  6. Jay Hilaga says:

    thanks to all

  7. AK says:

    Sir is it possible to design our own PCB layout for a feature phone. If so please elaborate about the same as I want to do a DIY project of making a feature phone.

  8. Abdr Razaq Ibrahim says:

    Sir, thanks for displaying your wealth of experience, may God augument your knowledge.

  9. james says:

    Its very helpful….thank you sir

  10. Mr T Matthews says:

    What are all of the minimum required components to make a call to a pre-determined phone number? Please help as i am trying to invent a device using minimal components to answer a call and call back a pre-programmed number

  11. Abhishek kumar says:

    Sir my doesn’t open some tacnician say their mother board in issue plz help


    my Sony Ericsson can’t turn on… because I plug charge and it goes off. but when I unscrewed it the PCB (engine) works

  13. victor wambua says:

    my phone gone crazy and it will connect to internet at some places and other it will not i have tried all the tricks i know as i am an it guy but all in vain am not much conversant with the internal internet parts of an android phone and that is why trying to learn here what could be the problem . help me

  14. Ashley says:

    Im looking 4 a screen 4 my mobi cell phone and the shop I brought it from pepe cell can’t help what must I number 0626717345

  15. munyi says:

    how do i identify the charging ic of nokia e500? Thank you.

  16. Patrick says:

    Hello Sir,
    I am a student of Mobile Phone repair and that is how I have landed on this website.
    Indeed, without a doubt, this is such an edifying platform for all! Beginner or professional.
    My questions is about a BLU phone

    It is BLU ENERGY X2
    it shows that it is capable of 3G/4G network preference but,
    When I try to choose that option, my sim card goes off, as if it is in airplane mode.

    What could I do to make sure that I also use 3G/4G internet other than only settling for 2G :(?

    Thank you and I’ll be glad to receive an answer.

  17. lucy zimba says:

    l have an inote phone my daughter put it in her mouth and after some minutes it stop working , it displaces everything but it is not respond to any touch. so what the problem and how can l overcome such problem ?

  18. Stedvance says:

    Hello Sir,I come from Kenya and i’m really getting technical knowledge from you,however;i dont know the Constant temp…that i shud use while using a Hot air blower that won’t destroy the PCB.

  19. mohan says:

    I have lenovo k3 have some network issue sometime low network,sometime no signal,some time network fluctuate…

  20. mohan says:

    sir I have lenovo k3 note’s network fluctuate ..sometime full signal,low signal sometime no service..

  21. arvind kumar says:

    Sir, my blackberry mobile is ON and sometimes work it self like calling, application open, and could not operate by me then what problem is

  22. vanessa says:

    thank you sir for this info, im a student of Electronics Engeering Technology and it really helps me a lot.. thank you sir.

  23. matienga Vincent says:

    Laptop Lenovo ThinkPad T500 is showing black screen. Which component is fault

  24. Dabah Andrew says:

    how to repair Samsung dead phone

  25. Yesenia says:

    Hello, thank you for the vocabulary terms. I didn’t read anything about faults being that the screen will stay blank(black) but the phone is still on and notifications light is still on. Would you be able to tell me what part or name that would be causing that? Thank you in advance!

    • Yesenia says:

      I got the screen to turn on, but now there are vertical colorful lines all over the screen especially if the background is black.

  26. Timoh m says:

    Thanx much

  27. M. Torik says:

    What in the component powders to save the amount of electricity formed as a component if it is different materials can be made as flexible connecting between the LCD and the machine mobille or if it could be partially to light in the LCD make it more efficient expenditure of funds manufacture, including light LCD speaker & microfen …….

  28. Adana tujuba says:

    tnx! It good thing

  29. Mustapha Waziri says:

    gud website

  30. akif ansari says:

    My cell phone when on then we add the charger when we remove the charger then it will be switch off sir , please give solution my cell name Samsung keypad E1200T

  31. marick says:


  32. James Offori says:

    I like this site, because I can learn more about cellphone’s here

  33. Abdulrahman Abid says:

    It is a great site for all thank u very much

  34. DeeYen says:

    I have a LG G3 which went ‘Blue Screen’ one fine day. Since it is out of warranty, I got it repaired at a local service center. The repairer said that he has replaced one of the ICs and resoldered. After resetting, the phone was on Android 4.2.2 and is not getting updated to latest OS like Marshmallow or Lollipop. What might have gone wrong?

  35. ASHIM KOJAR says:


  36. ASHIM KOJAR says:


  37. Jeanne says:

    Hi sir,i wanna ask what would be the problem on htc m9,it wont turn on or show anything.but if you put the charger there is a red light that blinks then stop after 1 min.i tried the master reset but it wont work.what should i do to repair it?

  38. Trish says:

    I put the inside of a contract phone with a shattered screen inside a prepaid phone both are the same type of phone. I thought by doing this the prepaid phone would now be the contract phone and I would be able to activate it however it is still asking for payment when trying to make a call what part of the phone did I not switch out to cause this?

  39. shalini r says:

    it is useful and helpful..

  40. Abhishek Patel says:

    Hi, I’m not able to hear people’s voice properly. Sound is too low to understand. Kindly let me know how to get it fixed at home. It’s LENOVO s660. Please also let me know a good website to purchase required part.

  41. obaydor says:

    I am very happy to see your page. I want to talk with you for future aim. My name is Obaydor. I m a teacher. my email Id is [email protected]

  42. Krishna bhandari says:

    hello sir…….I am from Nepal…..and I had a problem !!!!MY Samsung galaxy trend plus got water damage;so how can I solve it???

    • Santosh Das says:

      Disassemble the Phone and Clean the PCB and all other Parts with IPA or Alcohol or Petrol and Leave it to Dry. Assemble Back and your mobile phone will be OK. You can watch my video on how to Disassemble and Assemble Back a Mobile Phone.

  43. mohanteja says:

    thanks for the information you are giving us,we appreciate having guys

  44. mahden says:

    ser may I know your article about changing the display of any other mobile phone.?

  45. UTECH says:

    I must say a every big thank you for the posts, they are good blessing to me and I took my time to enjoy them, but can we use blower to heat screen touch separation and 2 I have that is counting below the powering voltage in a DC power supply thanks for helping Sir

  46. bilchan says:

    i also see your video in youtube ,,,nice sir

  47. Ronnie says:

    Hello sir
    I am really big fan of your blog and your site is very useful for beginner as well as specialist of mobile repairing technicians
    But I have one question for you…
    Please write blog on software related problem in mobile cell phone and all tools which is required for it.
    Thnxk for all

  48. Ahmed Saad says:

    Good day sir, I have been going through your writings/articles and is very helpful most especially to those engaged in mobile phone repair specialist.I do specialises in iphone and ipads repair and find it very difficult to deal with the glue that comes on iphone pcb at times you might damage the board from powering in the process of removing or Desoldering some ic’s on the pcb and secondly I was wondering if you can explain parts and their function in iphone most especially iphone 6, quide and equipment or machine to use in iphone/ipad pcb repair thank you and more grease to your elbow

    • Santosh Das says:

      Hello Mr. Ahmed: I like and respect your question. You questions are excellent. Yes, the glue is called SMT Glue and is very-very has very strong bonding. There are machines available to remove these glue but the machines are very expensive. I will certainly write an article on this glue issue and parts inside iPhone and their function.

  49. kin says:

    But lemme ask you sir, are we able to change the gsm, cdma into 3g or 4g? by only repairing it.

  50. COM. IB ADESHINA says:

    How do I get text book on maintenance & repairs of gsm?

  51. COM. IB ADESHINA says:

    wonderful work very helpful 10QU

  52. mangopi says:

    thanks for the information you are giving us,we appreciate having guys

  53. ali says:

    thanks sir for such a great knowledge for mobile phone repairing.
    sir plz upload complete software repairing for all mobile sets.i am waiting.thanks again sir you are great.

  54. chandru says:

    my micromax unite a 106 is not working properly in morning , evening and night time. it works in day time .what was the problem. please reply me

  55. Abdul Sayid says:

    God bless you for your wonderful article.I do appreciate it.we look forward to more from you.

  56. Yahaya says:

    thanks for your guidance!

  57. Pour choisir says:

    Please let me know if you’re looking for a article author for your site. You have some really good posts and I feel I would be a good asset. If you ever want to take some of the load off, I’d really like to write some articles for your blog in exchange for a link back to mine. Please shoot me an e-mail if interested. Regards!

  58. innocent says:

    very gud job ,ts helpful

  59. rock says:

    This site good but need improvement..i.e,faults are given here but why that faults arises are not given.for example,if there is any fault in antenna switch no networks it says but it not says why fault arises in antenna switch.By adding which means the site is 100% okay i think soo…

  60. salim says:

    I search many website but this is awesome

  61. Ato willie says:

    Am very happy with the lesson, Thanks Good day

  62. The illuminator says:

    thanks !!! doubtless you are people , and wisdom abides in you

  63. OAKES says:

    this is great guys was jus looking for this great stuff about repairing mobil phones your diagrams are easy to understand send us more stuff guys thanks

  64. mutethia says:

    which phone is this i cant follow diagram with mine .

  65. ranjan says:

    nice n helpful.

  66. MRM Arakani says:

    Bro,in my Symphony B2 there I can see a headphone logo and can’t remove it,I wanna help about that….

  67. MRM Arakani says:

    Awesome page to learn awesome repairing knowledge…and so many thanks to you…

  68. BARYALAY says:

    Hi tanks for your this site now i am very happy because i can solve my broblem

  69. sanjib says:

    sir how to change nokia 3200 display

    • Santosh Das says:

      It is same as changing display of any other mobile phone. I have already published an article on how to change / replace mobile phone display.

  70. Alazar kebede says:

    It is good i like it

  71. gopalm64 says:

    Super brother pls upload more

  72. gopal says:

    Thanku very i learned so much.

  73. Godwin says:

    I really gain alot from, God bless

  74. ayaz ali says:

    i liked this site so much and i got alot of guidance from this.

  75. P.Monagarashu says:

    Thnx i got more info it’s very useful for me

  76. Ocaka Mike says:

    Thanks for the simplified guide on mobile phone repair


  77. tharanga says:

    thanks. i like this site

  78. mohammad yamin says:

    i like your repairing system and i hope you will release more videos and audios.

    • Santosh Das says:

      Thanks for your visit and appreciation. I will certainly write more articles, and will upload more useful photos and videos related to mobile cell phone repairing.

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