*#0000# - to reset the phones menu-language to natural language, set initially by the distributor.
*#06# - for checking the IMEI (International Mobile Equipment Identity)
hold * then 5806 - Show Software Version
hold * then 5807 - A little bit different
hold * then 5472 - Testmode for datacable (it seems so)
hold * then 4329 - Activate and deactivate NETMONITOR
hold * then 621342 - Activate and deactivate another NETMONITOR
hold * then 3926 - shutdown
SP lock
You can turn around the lock routin by entering **04*PIN*PIN*PIN# now the secretcode change was applied and the software turns back to main menue. It works not on all triums, only on thos with older Sofware Versions.
Disclaimer: Some of these Codes may not Work, it depends on phone model! Try these Codes at Your own Risk! I'll take no any responsibility due to damage, data lost or device malfunctioning. Complaints will not be entertained. !