HuNi,
here are some examples.
1. for all Kyocera cdma phones
a. dial 111111
b. option – settings – debug screen – enter code(000000) – on-
after doing this u will get a screen where u can check the informations press next for other informations.
do the same process for exit.
2. Classic cdma handsets
go to settings in phone menu.
go to screen dial 7358#
after dialing this u will get some information then u can go ahead by urself coz different Classic handset have different settings.