Mobile Phone Light LED Problem and Solution

Learn How to Fix Mobile Phone Light LED Issue.

This chapter explains Mobile Phone Light or LED Problem and Solution – How to Solve Light or LED Fault in any Mobile Cell Phone. These problem and solution apply to all brands and make of mobile phones (Feature Phone and Android Smartphone) including Nokia, Samsung, iPhone, China Mobile Phones, Motorola, HTC, Sony, Blackberry, Alcatel, Apple, AudioVox, Benefone, Danger, FIC, Hagenuk, Palm, Kyocera, LG, Panasonic, Huawei, ZTE, Spice, Lava, Sony Ericsson, Micromax etc.

LED Light in Mobile Phone PCB

LED Light Connection in Mobile Phone PCB

What is LED in a Mobile Cell Phone?

LED in any mobile cell phone is an electronic component or part that generates light in the Mobile Phone. These are generally LED or Light Emitting Diode. There are 2 types of connection in the Light Section of a Mobile Phone: (i) Series Connection; and (ii) Parallel Connection.

Mobile Cell Phone LED Light Connection

Mobile Cell Phone LED Light Connection

Types of Mobile Phone Light LED Problem

Mobile Phone Light LED

Mobile Phone Light LED

  • No Light al all.
  • Light in only Keypad or Display.
  • Some lights not working.
  • Backlight Not Working

Mobile Phone Light LED Problem and Solution – How to Fix Light LED Not Working Fault in any Mobile Cell Phone

  1. Check Light Settings.
  2. If settings are OK then Resolder all LEDs.

    Mobile Phone Boosting Coil

    Mobile Phone Boosting Coil

  3. If the problem is not solved then change the display or the screen and check.
  4. If the problem is not solved the check all the LEDs using a multimeter. Keep the multimeter on Buzzer mode and Check LED. If LED is Good then it will Glow. If LED is Faulty then it will Not Glow.
  5. Change LED or Jumper if required.
  6. If the problem is not solved then Check Track of the Light Section of the PCB of the Mobile Phone and Jumper if Required.
  7. If the problem is not solved the Check the SMD Boosting Coil and Change if Required.
  8. If the problem is not solved the Heat or Change the Light IC.
  9. If the problem is still not solved the Heat, Reball (BGA) or Change the Power IC.

Notes:

Mobile Cell Phone Light IC

Mobile Cell Phone Light IC

In all Nokia Mobile Phones, there are 2 Types of Light IC:

  1. Ball-Type Light IC: Beside the Boosting Coil, There is a Small-Sized Ball-Type IC. When this IC is Desoldered, There are 8 Ball Underneath. This is the Light IC.
  2. Leg-Type Light IC: Beside the Boosting Coil, There is a Small-Sized, 4+4 = 8-Leg-Type IC. This is Light IC.
  3. Light IC = Back Light + Display Light

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Mobile Phone Light LED Problem and Solution FAQs

If your mobile phone LED light keeps flashing on and off, it could be due to a problem with the LED settings or a hardware issue. Try adjusting the LED settings in your phone's settings menu, and if that doesn't work, consider taking it to a professional for repair.

If your mobile phone LED light is too dim, it could be due to a low battery, a setting that needs to be adjusted, or a problem with the LED itself. Try adjusting the LED settings in your phone's settings menu, and if that doesn't work, consider replacing the LED or taking it to a professional for repair.

Yes, it is possible to replace your mobile phone LED light. However, it is a delicate process that should only be attempted by a professional. Attempting to replace the LED yourself could result in further damage to your phone.

To prevent your mobile phone LED light from getting damaged, avoid dropping your phone or exposing it to extreme temperatures. Also, be careful not to scratch the lens of the LED, as this can affect its performance. Finally, be sure to keep your phone in a protective case to minimize the risk of damage.

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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.

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78 Responses

  1. Nnenna says:

    Sir, my itel 2160 keypad backlight is not working, making it difficult to use at night. And if I make calls with my itel 2160 it will show caller number hidden (unknown caller), how do I resolved them. Thanks

  2. Hello sir my phone itel p13 screen is not showing light on screen but the screen is displaying inside please help me

  3. Itel p12 screen light problem from ice help me sir

  4. Sandeep Kumar says:

    Sir Nokia 6.1 plus ki double tone flashlight me one flash led sahi glow ho rahi h but 2nd flash led glow ho rahi h but heat kar rahi h or kuch der bad 2nd led kharab ho rahi h solutions sir

  5. Charles says:

    My itel 1408 fell in water after dry it up the display lights light up when I insert the battery or charger with out powering on the phone so phone is off but lights light up

  6. ManeyCharles says:

    Itel p33 plus backlight issues
    Am a phone technician I have changed all the necessary requirements on light sections still light is not coming on
    I got a new screen
    I checked the track from the diode on light section on pcb to the light on lcd its is connected
    I replaced the light ic, coil and diode and its reading fine but light is still off.
    Pls what do i do??

  7. Dezmond says:

    Itel 1408 no backlight pls help ..screen is in good condition

  8. shraddha says:

    i dropped my redmi note 7 pro accidentally and it has crack on back screen and it bend ..i repaired it..he was saying light ic was also faulty i replace that also… i didnt use phone for 5-6 days.. after repaired…today i put it on charge…when i plugged out… it was switched off..i switched it on… n unlock my phone …it got hang with blue hazey lines and turned off..i did 3-4 times… after some time it had black screen with redmi written on it… now it is not even starting ..is help..i want that phone to be repaired…it was a gift and it is spl. to me

    • K.N.Rao says:

      Dear sir /mam your phone PCB is damage the problem occurred frequently so my suggestion is replace new piece
      This is my best advice because iam also face same situation

  9. Alfayo says:

    Sir water enter my maxfone and since then the led flashlight is always on even when power is off, what is the solution please??

  10. Chanandeep says:

    Hlo sir i want to know that i unfortunately put the screen pin from wrong way to test it as I ordered it from online and now it is damged so I again changed it and buyed new but it is not working what is the fault is it on mobile and how to fix. The screen is working on another mobile. Mobile xiaomi mi a1.

  11. Yahuza says:

    Techno l8 ic display light

  12. Nwachi sunday says:

    Dear sir …my infinix X555 back camera is shaking anytime am using it to capture picture and the camera will not be bright. Please sir , what can I do?

  13. Anscar says:

    Techno wx3 the screen is okay but no light, what’s the solution?

  14. bibanky says:

    my fero vibe phone shows only a White blank screen while other things on it are still functioning what could be the issue

  15. rahul rai says:

    hii super

  16. Ugwu Christian Nnaemeka says:

    My itel P 15 is on a low light level even after putting the brightness to the highest. What could be the problem. Plz help me.

  17. Raph says:

    Good day sir my Gionee x1s after changed screen flash on front and back camera big working .

  18. viviangoju says:

    my itel s12 isn’t turning on and i have tried charging and changing the battery
    pls what could be the problem

  19. Blessing says:

    Pls my tecno T528 button is not showing light and I just bought it two days ago,what could be the problem

  20. Daniel says:

    good morning sir,I have a phone Ginoee m3 mini it fail inside water and refuse to on so I wash the motherboard and dry it with sun then it on but the led is not displaying light but i can see the writtinge on the screen but is dark no light please help me how can I fix it

  21. Akhilesh says:

    I have moto e 4 plus it has an issue . My baby dropped phone in water now my phone display is not showing but every thing working like ringing. Vabratio. Touch vibration and i contracted with phone tech. and he said phone light IC problem so phone light IC problem can be resolve or not

    • Check the Board Properly with IPA or Alcohol. Apply some Good Quality Liquid Flux on the Board and Give some Hot Air from some Distance. The LEDs that provide Light to the Display may have shorted. They can be easily Replaced.

  22. abiodun says:

    pls sir hw can i make a jumper on tecno l9 plus light ic if d boosting coil has a little crack and it not showing?

  23. ankur says:

    hello sir, i have a lenovo vibe p1m phone and its camera flash light is suddenly got dim .
    what could be the problem, please help..

  24. michaels says:

    Pls I need help on itel 1556 lcd light jumper

  25. George says:

    Please my fero pace home , exit, and option led light so I can’t enjoy my adroid phone in the night because i don’t see the option pads down my screen, could it be settings.

  26. Scarlett Autance says:

    That’s exactly what I am looking for. Thanks for this post. I love your blog and all the ideas you shared about car tips. Keep it up!

  27. PawanRai says:

    NICE SIR

  28. anil says:

    Dear sir ,
    Mera mobile vivo y21l hai.
    Island light section me diode JAL ,gaya hai .
    Kaise thik kare

  29. peter says:

    hello, I have an infinix X557 the lcd backlight isn’t coming up but the screen display is ok. I would appreciate any diagram towards this

  30. Bii says:

    Dear Eng :
    Plis help me to repair tecno N6s lights by jumper

  31. John says:

    Dear sir,
    Good evening i want to know where the backlight settings that will make the key pad light to show on my Techno phone?.

  32. J says:

    Hi Santosh, nice article.
    I have a Redmi 3s where the backlight is not working. I can see the display if I shine a flashlight directly on it.

    I tried to follow a youtube video and found that after the diode, the voltage is only 4V – instead of probably 30V after the boost coil.

    Does this mean the boost coil is spoiled? – very hard to find what part to buy.

  33. bapi roy says:

    Sir amar nam holo Bapi.
    amar ekta mobile mobiler nam holo lava Iris 402 lcd pblm .
    to amar lcd nasto haye jabar pare ami sei lcd take change kare diye jakhan amar hanset take on karchi takhan amar mobiler handset er white haye jachhe to ekhn ami ki karbo to setake ki vabe thik karbo
    plz sir help me

  34. santu Lai says:

    Sir , mera nam Santu … Sir , mai koye v company ka mobile me track line ka pahachan nahi kar parahun(key pad or Android) … Plz solution di jiye.

  35. Rakesh Karmkar says:

    I m getting many many unwanted ads. on my samsung j2.
    And automaticaly opening google playstore.

  36. Ritesh rajput says:

    In my Bq E1 model ledbacklght is not off please

  37. Anmol Raaz says:

    Dear sir
    I want full lcd light track way in oppo Neo -7

  38. kalee says:

    i have problem with itel 1508 screen light problem

  39. Henry Ebri says:

    I have gretel phone when it istarts been powered it only vibrat without powering pls sir help me out

  40. Kanhaiya says:

    Dear sir

    Microsoft mobile rm 1036
    It’s showing white display there are some broken also in board
    Can you pls help me with right solution…..

    Thank you
    In advance…

  41. Suraj says:

    Sir,my name is Suraj. I have a mi mobile. One day it fall in water. So it was off. I took it to the service center but they told me change all motherboard. Then I gave it to my friend. He told me that only display light does not work. Because the IC is damaged. He returned my mobile. So please sir tell me what I do,because the center did not give proper solution.

    • Disassemble the Phone and clean the motherboard, all the connector and all soldering points with IPA using a Brush. You can buy IPA Solution and any Shop where they sell mobile phone parts. Clean properly everything and allow the IPA to Evaporate and dry up. Assemble back and check. Give a boost to the battery using a battery booster if required. I think it will start working.

  42. Gurdeep singh says:

    Sir ji mere pas micromax q106 Hai .uski power key chorte hi wo off ho jata hai. Plz, help me sir

  43. Samsung 3322 is auto vibrate only
    Pls solution

  44. Samsung c3322 is battery inserted then mobile is full time vibrating
    Pls solution

  45. pushpraj says:

    Very very thanks

  46. pinkal das says:

    i want latest post of mobile servicing

  47. Lucky says:

    Dear
    I have a micromax tab p650. The battery current backflows to charger when connected. The charger LED glows even thpugh the charger supply is off. Please advice a remedy. Also advice on what if the problem is not attended !
    Thanks!

  48. Anand says:

    Nice

  49. Najib kiggundu says:

    thanks for all those updates

  50. luhiga says:

    Hallo

    Could assist me where can I buy a chinamobile phone diagrm/schematic

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