Motorola T190 Secret Codes:
After this codes must pres Call(Yes) key!

*#06#...Display Phone IMEI
*#301#...Manual Test Menu
*#300#...Info about Phone Software Version
*#302#...Acoustics Menu
*#303#...Display "Settings Saved"
*304#...Display "Settings Saved"
#304*19980722#
*#305#...Location??? (for what???)
*#306#
*#307#...Engineering NetMonitor for Handset, Network and SIM
*#400#...AdcVal & CalVal Menu
*#311#...RESET PHONE CODE TO 1234 (factory)
*#402#...Display Contrast (normal level is 26)
*3370#
#3370#
*#403#...Service and Soft Information
*#72837726#
*#501#...Service Tool (On Time & Failure ID)
*#502#...Pack Date info
*#314#...Backup Bat Menu (info about voltage?)