"Hide password" for Android"

Mobile phones of different manufacturers may hide code to view system and firmware versions, or perform hardware testing. Of course, Android phones are no exception, in addition to displaying more detailed mobile phone information like a computer, you can reset the settings to the original factory and update the camera firmware. However, some code should be used with caution because it may lead to the loss of the original functions of the mobile phone. The author only reposted the code on the Internet and will not be liable for any problems.

* #4636 # * display mobile phone information, battery information, battery records, usage statistics, and Wi-Fi information

This is often used by happy phone. You only need to enter it in the dialing area.

* #7780 # * resetting to the original factory does not delete the preset program or SD card files.

* 2767*3855 # resetting to the original factory will delete all files on the SD card.

* #34971539 # * display the camera firmware version or update the camera firmware

* #273283*255*663282 * # * enable a place where you can back up media files, such as photos, sounds, and videos.

* #197328640 # * start the service mode. You can test the settings of the mobile phone and change the settings.

* #232339 # * or * #526 # * or * #528 # *-WLAN Test

* #232338 # *-display the WiFi MAC address

* #1472365 # *-GPS Test

* #1575 # *-Other GPS tests

* #232331 # *-Bluetooth Testing

* #232337 # * #-display the bluetooth device address

* #8255 # *-start Gtalk Service Monitor

* #7594 # * when you press the power-off button for a long time, a window is displayed for switching to the mobile phone mode, including the mute mode, Apsara stack mode, and shutdown mode. You can use the above Code, directly turn to the shutdown button.

Show Mobile Phone firmware code

* #4986*2650468 # *-PDA, phone, H/W, and rfcalldate

* #1234 # *-PDA and phone

* #1111 # *-fta sw version

* #2222 # *-fta hw version

* #44336 # *-PDA, phone, CSC, build time, And changelist number

Various hardware tests

* #0283 # *-packet loopback

* #0 * # *-LCD Testing

* #0673 # * or * #0289 # *-Melody Test

* #0842 # *-device testing, such as vibration and brightness

* #2663 # *-touch screen version

* #2664 # *-Touch Screen Test * #0588 # *-proximity sensor test

* #3264 # *-memory version