*#06#
To check the IMEI.

*#0000#
To check the firmware version and date.

*#92702689# *#war0anty#.
To check the IMEI. The date when it was purchased, and the date when it was repaired.

*4720# (*hra0#)
To activates th e Half Rate.

#4720# (#hra0#).
To deactivates Half Rate.

*3370# (*efr0#).
To activates Enhanced Full Rate.

#3370# (#efr0#).
To deactivates Enhanced Full Rate.

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*#746085685# . (*#sim0clock#)
To check the SIM clock status.

*#7220# (*#pca0#)
To activate the GPRS and Packet Common Control Channel PCCCH) supports.

*#7230#. (*#pcd0#)
To deactivate the GPRS and Packet common control channel (PCCCH)supports.

*#7760# (*#ssn0#)
To check the manufacturing serial number.

*#2820# (*#bta0#)
To check the Bluetooth MAC address.

*#7370925538#. (*#res0wallet#)
Reset the mobile wallet.