*#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 littel bit diffrent
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.