How to Diagnose Mobile Phone Problem – Diagnostic Codes

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Here we Learn How to Diagnose Mobile Phone Problems with Diagnostic Codes. Learn How to Diagnose Common Mobile Phone Problems with Secret Diagnostic Codes.

What are Secret Diagnostic Codes to Test & Check Phone Hardware Condition??

Diagnostic codes, also called, secret codes, help to get a closer look at the inner functionality of a phone. Most mobile phone repairing technicians use these diagnostic codes to troubleshoot Feature Mobile Phones, Android Smartphone. and Apple iPhone.

You may remember that whenever you go to a technician or any service center, the first thing they do is enter some code with # symbol and some numbers and few other symbols. These are nothing but Diagnostic Codes that help the technician to know about the exact problem. They have a list of such codes and they use them as and when required.


 
There are a list of these diagnostic codes for Android phones, iPhone, China phones and other phones. Most manufacturers provide such list with their manual that comes with a new phone.

Below you will find a list of Codes to Diagnose Mobile Phone Hardware Problem. Make sure to use them with caution. Read carefully what each diagnostic code does before entering them in your phone. Some codes can wipe OFF the firmware or delete the vendor-specific updates from the OS. So, be extra careful.

 
Vibrator and Back light Test
*#*#2663#*#*

Touch Screen Version
*#*#2664#*#*

Touch Screen Test
*#*#0588#*#*

Proximity Sensor Test
*#*#3264#*#*


 
  Mobile Phone Secret Diagnostic Codes

iPhone – 3001#12345# * – This will display “Field Test” on your iPhone where you can easily test each part of the phone’s functions.
BlackBerry: TEST
HTC: *#*#3423#*#*
LG: 2945#*# or 2945*#01*#
Motorola: ##7764726
Nokia: ##3282
Samsung: * #0011#
Sony: 904059+>
The above codes will help you identify software or hardware problem and then it becomes easier to find the solution. Please note that the above codes may not work on all models.


List of Useful Secret Codes for Android Mobile Phones
 

Function
*#*#0*#*#*

LCD Test
*#*#0673#*#*
OR
*#*#0289#*#*

Melody Test
*#*#0283#*#*

Packet Loop Back
*#*#0842#*#*

Vibrator and Back light Test
*#*#2663#*#*

Touch Screen Version
*#*#2664#*#*

Touch Screen Test
*#*#0588#*#*

Proximity Sensor Test
*#*#3264#*#*


 

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