Among the features that characterize the rest of Android for other operating systems is provided by the freedom of the settings that users. Besides allowing the installation of different applications that you can change important aspects of the work of the Android system on your phone, this unique system also allows you to access each of the hidden functions to control more on your smart phone.
Contrary to what many believe, it is not necessary to install third-party applications to manage many of its settings. It is sufficient that the login interface to make calls and write some secret codes to gain access to many secrets hidden by Google about you!
In this article we enumerate some secret codes in the Android phones you can use to solve the problem or for more control over your device. Or just learn some advanced information about your device.
Global symbols
1) the device to factory settings * # * # 7780 # * # *
One of the most famous symbols between users, and this option to delete all that is in the device memory, and the return of the original factory settings again. This option works the same way through the system board settings.
2) a list of the test settings * # * # 4636 # * # *
You can access this code to the menu that allows you to discover a lot of details about your smart phone, including information about the battery and networks used. Also, it can access to usage statistics are very detailed.
3) smartphone form * 2767 * 3855 #
This command works differently from the option of returning to the factory settings. In this case, applications will be cleared and all personal data without having to reset the system settings!
4) to obtain detailed information about the camera * # * # 34971539 # * # *
5) Service test mode * 197 328 640 # * # * # * #
You can test your phone components from the camera to the accelerometer in your device. This code is very useful, in particular to see if there is any defect in the operation of a phone components.
6) Create a backup copy Links * # * # * 273 283 255 * 663 282 * # * # *
7) E LCD screen test * # * # 0 * # * # *
8) to obtain the details of RAM * # * # 3264 # * # *
9) to see a copy Touch Screen * # * # 2663 # * # *
10) Background and vibration test * # * # 0842 # * # *
11) sensor test system * # * # 0588 # * # *
12) the touch screen test * # * # 2664 # * # *
13) A list of the device information confidential * # * # 4986 # * # * 2650468 *
14) a copy of the operating system installed on a smartphone or tablet computer * # * # * # * # 44336
15) wireless network test * # * # 232339 # * # * Or * # * # 528 # * # * Or * # * # 526 # * # *
16) to discover the MAC address of the Wi-Fi network * # * # * # * 232338 #
17) test fast GPS * # * # 1472365 # * # *
18) test the Bluetooth connection * # * # * # * 232331 #
19) to see the Bluetooth device code * # * # * # * 232337 #
20) Turn off the machine * # * # 7594 # * # *
21) test to determine the different locations # 1575 * # * # * # *
22) the audio test over the phone * # * # 0673 # * # * Or * # * # 0289 # * # *
23) test * # * # 7262626 # * # *
24) the device's IMEI code discovery * # 06 #
25) activate the audio recording * # * # 8351 # * # *
26) disable the sound recording * # * # 8350 # * # *
27) control the USB connections * # 872564 #
28) Control Panel HSDPA / HSUPA * # 301279 #
29) to open the settings to diagnose system * # 9090 #
Only for HTC
30) For testing tasks list * # * # 3424 # * # *
31) access to (diagnostics mode) diagnostic mode ## 3424 #
32) HTC EPST ## 3282 #
33) A list of the test ## 33284 #
34) HTC Vocoder ## # 8626337
35) reverse logistics support ## 786 #
36) Review Protocol 7738 # ##
Only for Samsung
37) To see the version your phone * # 1234 #
38) Information about the device and system * # 12580 * 369 #
39) To check the battery case * # 0228 #
40) the list of services * # 0011 #
41) USB Service * # 0808 #
42) activate (service mode) service mode * # 9090 #
43) Get on the list Factory Keystring * # 7284 #
44) the camera List * # 34971539 #
45) A list of test mode * # 0 * #
Only Nexus 5
46) reset the device * # * # 786 # * # *
47) to open the application Superuser * # * # 7873778 # * # * Or * # * # 1234 # * # *
48) verification of system updates * # * # 2432546 # * # *
These can be used secret codes to find out details about hardware and software from your smart phone. In addition, some hidden menus enable you to test specific areas of your smart phone, which helps to identify errors more accurately!
Source:B4tech