List of Secret codes for Android:

Reset WiFi driver (?)

    *#*#526#*#*
    *#*#528#*#*
    *#*#232339#*#*
 
Restarting Samsung Galaxy Phones Secret Code

    #*2562#
    #*3849#
    #*3851#
    #*3876#

These are all the Samsung Galaxy secret codes to restart your android without manually doing so.

 
System Control Secret code

    *#7284# USB I2C Mode Controlling Panel
    *#872564# This code control the USB Logging
    *#4238378# This secret code control GCF Configuration
    *#0283# This secret code Control Audio Loopback
    *#1575# Manage and control GPS Menu

 
Phone Information Secret codes

    *#*#4636#*#* This is the secret code for your phone information
    *#*#4986*2650468#*#* This code is used to View Phone’s PDA , H/W, RFCallDate details
    *#*#1234#*#* View PDA type and Version
    *#*#1111#*#* secret code to display Firmware software version
    *#*#2222#*#* secret code to display firmware hardware version
    *#*#44336#*#* Display your build version ROM sales code, build time and change list number
    *#272*IMEI# – Use this code to change your sales codes and reset the user data
    *#0011# This secret code is used to show the status information for Your GSM Network
    *#*#4636#*#* Display all the user statistics from the beginning of time and the essential Phone Information
    *#12580*369# this secret code checks software and hardware information.
    *#12580*369# Display all Software and Hardware information of your phone
    #*#8377466# Display all Software Version and Hardware Version information of your Android device

 
Secret Code for all testing purposes

    *#0589# This Code is used to enter Light Sensor Test Mode
    *#0588# Proximity Sensor Secret code
    *#*#526#*#* Enter WLAN network by using this code
    *#*#232338#*#* This code will display all WIFI mac address
    *#*#1472365#*#* Using this secret code to Test GPS
    *#*#1575#*#* A next GPS test code
    *#*#232331#*#* Troubleshoot your Bluetooth
    *#9090# Diagnostic Configuration secret code
    #*3888# BLUETOOTH Test mode Code
    #*#0*#*#* Test Your LCD Screen
    *#*#0673#*#* melody and audio Test
    *#*#0842#*#* General Test Mode (vibration test and backlight test)
    *#*#2663#*#* Test your LCD touch screen
    *#8999*8378# Universal Test Menu
    *#0842# Vibration Motor Test Mode Code
    *#0782# Test your Time in real time mode
    *#0673# Audible Test
    *#0*# General Test Mode function

 
Network Secret codes

    *7465625*638*# This code gives you the ability to customize Network Lock MCC/MNC
    #7465625*638*# Use this code to perform Network data locks and (Insert Network Lock)
    *7465625*782*# Customize your Network Lock NSP
    #7465625*782*# input any semi- Partiality Network Lock Keycode
    *7465625*77*# Key code for Network lock SP
    #7465625*77*# Secret key to insert network operator
    *7465625*27*# Secret code for Network lock and operation for NSP/CP
    #7465625*27*# Secret phone code for Content Provider network insertion
    *#272*IMEI# this code gives you the buyer code
    *#2263# RF Band -select your network mode type

 
Firmware and service mode Secret code

    *#32489# Enter Service mode (Ciphering Info)
    *#197328640# This is the code for default Service Mode
    #0808# usb service
    *#9090# service mode usb
    *#2663# TSP / TSK firmware update
    *#34971539# Update your camera firmware
    *#526# WLAN Engineering service mode
    *#528# WLAN Engineering service Mode
    *#7412365# Enter your Camera Firmware Menu.
    *#8736364# OTA Update Menu screen code for android
    *2767*4387264636# Sellout SMS / PCODE view

 
Secret code for Factory reset (Android)

    *#7780# Factory Reset all your phones with a confirmation message
    *2767*3855# Full factory reset without a confirmation message. It will perform a hard reset.
    *#*#273283*255*663282*#*#* copy files and backup media files

 
Secret code for Debugging

    *#745# Dump Menu for dumping RIL
    *#746# general Debug Dump Menu
    *#9900# Bring you to System Dump menu, give you the option to boost your network speed, Wi-Fi and battery
    *#03# NAND Flash S/N
    *#7594# Remap Shutdown to End Call TSK
    *#272886# Auto Answer Selection