*#06# : For checking the IMEI (International Mobile Equipment Identity)
*#0000# : Resets the phones menu-language to English.
*#103# followed by 'YES' : Time and date will be shown.

>*<<*<* : Checking the firmware revision information (software release)
>*<<*<*> : 1-row text strings. By pressing "yes", you can check the phones text programming in currently selected language. (298 entries)
>*<<*<*>> : n-row text strings. By pressing "yes", you can check the phones text programming in currently selected language. (160 entries).

The Service Provider Lock

The Service Provider (SP) Lock menu is used to lock the cell phone to the SP's SIM card. Once the cell phone is locked to a specific operator, if one inserts a SIM card from a different operator the phone will refuse to accept it. The cell phone will however accept another SIM card from the same operator.

To activate/deactivate this lock one needs a special secret code that is not available to the end user.

Here is how to activate the menu :

<**< Lock to Network? By pressing "yes", you have 5 attempts to enter NCK.
<**<< Lock to Network subset? By pressing "yes", you have 5 attempts to enter NSCK.

Warning: Your phone can be locked to a service provider FOREVER by doing this! If an invalid code is entered all five times, the menu will exit and be deactivated! Any further attempt to activate the NCK/NSCK lock Menu will result in the response "Not allowed"! However the NCK/NSCK lock can be recover through a direct clearing in the EEPROM.

Shortcut for Last Dialed call menu

If you for some reason don't want to enter the 'Last Dialed calls menu' by using the 'YES' key you can use the following key stroke instead :
First '0' then '#'.

Message Report

When you are writing a SMS message, place at the start of it the code *0# and continue with your message. It's job is like the Ericsson's Delivery Report. It gives you important information about the sent message.