*#06#               IMEI number
*#67705646#         clear LCD display
*#0000#             software version
*#2820#             bluetooth address
*#7780#             reset to factory settings
*#746025625#        sim clock allowed status
#pw+1234567890+1#   show sim any restriction
*#92702689#         useful information
*#3370#             increase signal strength
*#3370#             phone will automaticaly restart increase bettery life
*#4720#             half rate codec activation
*#4720*             half rate codec deactivation phone will automaticaly restart
*#5513#,*#5514#     screen rotate left and right
*#5511#             screen straight
*780#               chech date and time from ufone