Samsung Galaxy - Working Codes

 · *#0*# - screen test
 · *#06# view IMEI number
 · #1234# - check software version of phone.
 · *#12580*369# to check software and hardware information.
 · *#0228# Battery status (ADC, RSSI reading)
 · *#32489# Service mode
 · *#7780# factory data reset
· *2767*3855# Full factory reset (Don't dial it does not ask you to confirm unless you have problem)
 · *#07# (Test History)