1. By typing "*#*#4636#*#*" you will be redirected to phone information menu. This code allows you to check information about your phone, battery, battery stats and WiFi.


 

1.1  Phone Information - Here you can check your IMEI number, Signal strenght, cellinfo and connection type. Also you can run Ping test too.



1.2  Battery Information - This page shows your battery properties like: battery voltage, temperature, battery technology and device running time.



1.3  Usage statistics - This one displays your last app usage period.



1.4  WiFi Information:

- Wi-Fi API - Here you can disable current WiFi network, disconnect connection, get information about connection and other stuff.

- WiFi Configuration - On this page you can check information about connected network

- WiFi Status - Read about connected network and run Ping test



2. Typing this secret code "*#06#" you can easily check your IMEI number.


3. Calendar *#*#225#*#* - check your events in calendar

 

4. Debug info for Google Play Service  *#*#426#*#*

 


5. Access Google Partner Setup *#*#759#*#* 



6. Access email debug information *#*#36245#*#*

 

7. Gtalk Monitor *#*#8255#*#*



 

8. Engineering Mode  by typing in stock calculator app  .12345+=

- BT_Test

- WiFi_Test

- Battery_Test

- SDcard_Test

- SIMcard_Test

- SIMcard_Test2

- Touch_Test

- GSensor_Test

- Keypad_Test

- MultiTouch_Test

- Vibrator_Test

- Receiver1_Test

- Speaker_Test

- BoarMic_Test

- MainCamCapture_Test

- VGACamCapture_Test

- Display_Test

- Headset_Test

- HeadsetMic_Test

- HeadsetKey_Test

- Proximity_Test

- LightSensor_Test

- CMD_Mouse_Test