*#06# - IMEI
*#0000# - Firmware
*#335738# - Deletes automaticly added MMS and GPRS profiles received from your mobile operator through SMS
*#92702689# - Enter the service menu
*#7370925538# - Delete all the content of the wallet and the wallet code
*#7780# - Restore factory settings
Enhanced Full Rate Codec (EFR)
Minimizes baterytime, better sound quality
*3370# to turn on
#3370# to turn off
Half Rate Code (HR)
Maximizes baterytime, lower sound quality
*4720# to turn on
#4720# to turn off
*#2820# for the MAC address details for the Bluetooth
