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In this article we will identify a very large number of secret codes for all devices and phones running Android. For those who do not know secret codes are numbers and symbols that you can use on your phone to access more information about the phone or solve any problem by phone and about By entering the call interface, typing the code from right to left.

* # * # 7780 # * # *
Of the most famous codes and used to return the phone and the device (Fermat phone), write the code from right to left and follow the steps to return the phone to the factory settings.

* # * # 4636 # * # *
Find out details and information about your phone like knowing the battery information and networks used.

* 2767 * 3855 #
Clear applications and personal data only without having to reset system settings.

* # * # 34971539 # * # *
Get information about the phone camera.

* 197 328 640 # * # * # * #
To see if there is any problem or defect in the phone or not.

* # * # * 273 283 255 * 283 663 * # * # *
Create a backup faster.

* # * # 0 * # * # *
Test the LCD screen

* # * # 3264 # * # *
Learn and get details of random access memory (RAM).

* # * # 2663 # * # *
Find out the version and issue of the touch screen.

* # * # 0842 # * # *
You can make a background test and vibration.

* # * # 0588 # * # *
Test the sensors on the phone.

* # * # 2664 # * # *
Test the touch screen and know its capability.

* # * # 4986 # * # * 2650468 *
Device information

* # * # * # * # 44336
Know the version and issue of the operating system on the smart phone or tablet.

* # * # 232339 # * # * or ###############
Wireless Networks Test.

* # * # * # * 232338 #
Find out the MAC address of your phone.

* # * # 1472365 # * # *
Test GPS Positioning Technology.

* # * # * # * 232331 #
Test Bluetooth technology.

* # * # * # * 232337 #
Learn about the Bluetooth device icon.

* # * # 7594 # * # *
Stop the device.

# 1575 * # * # * # *
Test different positioning.

* # * # 0673 # * # * or * # * # 0289 # * # *
Test your phone's voice.

* # * # 7262626 # * # *
make a test .

* # 06 #
Detect and learn the IMEI code of the device.

* # * # 8351 # * # *
Voice Activation.

* # * # 8350 # * # *
Disable audio.

* # 872564 #
Control USB connections

* # 301279 #
Control panel HSDPA / HSUPA

* # 9090 #
Open settings for system diagnostics

The following code is for htc devices only:

* # * # 3424 # * # *
Get the Task Test menu

## 3424 #
Accessing the diagnostic mode

## 3282 #
HTC EPST

## 33284 #
Test list

### 8626337
HTC Vocoder

## 786 #
Reverse logistics support

7738 # ##
Review Protocol

The following codes for Samsung devices:

* # 1234 #
Know the phone version.

* # 12580 * 369 #
Learn about device and system information.

* # 0228 #
Check the battery status.

* # 0011 #
List of services.

* # 0808 #
Service usb.

* # 9090 #
Get the Menu Factory Keystring.

* # 34971539 #
The camera's Firewire menu

* # 0 * #
Test mode menu. We finish this post but, anyone know more codes not written in above then share it in comments and i will edit post, thanks for viewing this post