Your Android device stores a lot of information about its hardware and system which may be difficult for normal users to access. But if you know the Android secret code, you can factory reset your device, find out its hidden camera information, instantly back up your valuable data and much more.

Secret Android system code
The code entry procedure is very simple and only requires you to open the dialer keypad and enter the appropriate number sequence. It’s important to note that some codes are carrier specific, so they won’t work on all devices. So, if your phone is not responding to the code, don’t think about it, just go ahead and find something else.
Warning! These codes should be used with caution. They can make your phone lose data, or render it unusable. There’s a lot of incomprehensible tech jargon that pops up in the menu after entering some of this code, which means that if you’re not 100 percent sure of what you’re doing, don’t do it.
List of secret codes for Android
These codes are mostly universal, and should work on any Android device, regardless of manufacturer. There may still be operator restrictions on certain codes, so they’re not all guaranteed to work.
Info code
*#06# Show phone IMEI
*#0*# Menu Info (does not work for all phones)
*#*#4636#*#* Menu Info
*#*#34971539#*#* Camera info
*#*#1111#*#* FTA software version
*#*#1234#*#* PDA software version
*#12580*369# Software and hardware information
*#7465625# Device lock status
*#*#232338#*#* MAC Address
*#*#2663#*#* Touchscreen version
*#*#3264#*#* RAM Version
*#*#232337#*# Bluetooth Address
*#*#2222#*#* Hardware version
*#*#44336#*#* Software version and update info
Backup code
Test code
*#*#197328640#*#* Test mode
*#*#232339#*#* Wi-Fi Test
*#*#0842#*#* Brightness and vibration test
*#*#2664#*#* Touch screen test
*#*#232331#*#* Bluetooth test
*#*#7262626#*#* Field test
*#*#1472365#*#* GPS quick test
*#*#1575#*#* Complete GPS test
*#*#0283#*#* Loopback test package
*#*#0*#*#* LCD display test
*#*#0289#*#* Audio test
*#*#0588#*#* Proximity sensor test
Configuration code
*#9090# Diagnostic settings
*#301279# HSDPA/HSUPA Settings
*#872564# USB logging settings
Developer code
*#9900# System dump mode
## 778 (+ call button / green) EPST menu
Manufacturer specific code
Motorola
HTC
## 786 # (Attention!) Phone reset menu
##3282# EPST menu
## 3424 # Diagnostic mode
## 33284 # Field test
##8626337 # Launch Vocoder
*#*#4636#*#* HTC info menu
More codes
*2767*3855# (Attention!) Full factory reset
*#*#7594#*#* Turn off the phone
*#*#8351#*#* Enable dialer log mode
# * # 8350 # * # * Disable dialer log mode
Stay away from these codes! *#*#7780#*#* (Attention! Risk of data loss and render phone useless) Factory data partition reset
*2767*3855# (Attention! Risk of losing data and rendering the phone useless) Formatting the device
USSD Code
It’s not a secret, but they’re not that well known. USSD, or Unstructured Additional Service Data, codes connect to the network the phone has dialed to perform certain functions, such as finding out how much credit is left on your prepaid phone or how much data you’ve used this month. They change frequently, and codes vary from carrier to carrier.
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