Use at your own risk some dial codes may not work and some will work
To turn on hidden menu enter this code into the dial pad
*#22745927
*#06# Shows IMEI (International Mobile Equipment Identity) number
*#0*# LCD Test Menu
Dial the secret code *#0*#. Now you get a screen with title LCD TEST as shown in image and below that you have lots of option to test various hardware parts of your phone such as speaker, sensor, lcd, etc
*#8999*523# LCD Brightness
*#1234# To check Software and Hardware information, PDA, CSC, MODEM (Firmware Version)
*#2222# H/W Version
*#*#4636#*#* user statistics and Phone Info
*#0011# Displays status information for the GSM
*#7780# Factory Reset
*2767*3855# Full factory reset (Don

To turn on hidden menu enter this code into the dial pad
*#22745927
*#06# Shows IMEI (International Mobile Equipment Identity) number
*#0*# LCD Test Menu
Dial the secret code *#0*#. Now you get a screen with title LCD TEST as shown in image and below that you have lots of option to test various hardware parts of your phone such as speaker, sensor, lcd, etc
*#8999*523# LCD Brightness
*#1234# To check Software and Hardware information, PDA, CSC, MODEM (Firmware Version)
*#2222# H/W Version
*#*#4636#*#* user statistics and Phone Info
*#0011# Displays status information for the GSM
*#7780# Factory Reset
*2767*3855# Full factory reset (Don