(တခ်ိဳ ႔ဖုန္းတစ္လံုး၂လံုးမွာေတာ့အလုပ္ မၿဖစ္တာရွိတတ္ပါတယ္)
*#*#4636#*#* - Phone Information (allows you to change the SMS service centre number and more)
*2767*3855# - HARD RESET (will fully wipe and restore firmware. USE WITH CAUTION
*#*#34971539#*#* Shows completes information about the camera
*#*#7594#*#* Changing the power button behavior-Enables direct poweroff once the code enabled
*#*#273283*255*663282*#*#* For a quick backup to all your media files
*#*#197328640#*#* Enabling test mode for service activity
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* Wireless Lan Tests
*#*#232338#*#* Displays Wi-Fi Mac-address
*#*#1472365#*#* For a quick GPS test
*#*#1575#*#* A Different type GPS test
*#*#0283#*#* Packet Loopback test
*#*#0*#*#* LCD display test
*#*#0673#*#* OR *#*#0289#*#* Audio test
*#*#0842#*#* Vibration and Backlight test
*#*#2663#*#* Displays touch-screen version
*#*#2664#*#* Touch-Screen test
*#*#0588#*#* Proximity sensor test
*#*#3264#*#* Ram version
*#*#232331#*#* Bluetooth test
*#*#7262626#*#* Field test
*#*#232337#*#* Displays bluetooth device address
*#*#8255#*#* For Google Talk service monitoring
*#*#4986*2650468#*#* PDA, Phone, Hardware, RF Call Date firmware info
*#*#1234#*#* PDA and Phone firmware info
*#*#1111#*#* FTA Software version
*#*#2222#*#* FTA Hardware verion
*#*#44336#*#* Displays Build time and change list number
*#06# Displays IMEI number
*#*#8351#*#* Enables voice dialing logging mode
*#*#8350#*#* Disables voice dialing logging mode
**05***# Execute from Emergency dial screen to unlock PUK code
Samsung Only
*#*#7780#*#* Wipe data/factory reset
credit goes to : free your android
Nyanlin Htetnaing (MMUC)