<<<GSM Secret Codes>>>
*43# to activate call waitinG, to deactivate #43#
If your phone doesn't have incoming call barring and outgoing call barring, you can try this. For outgoing call barring dial *33*barcode*# and pres Ok
To deactivate it dial #33#barcode*#. On any phone on any network type in **43# to enable conference calls. You can make up to 7 calls at once
If you need to block SMS reception (if you are spammed by someone) just press this code:*35*xxxx*16# xxxx is your Call Barring code (default is 0000). To remove this barring type:#35*xxxx#
If you want to hide/show your phone number when calling, put one of these codes below in front of the number that you are going to call.(*#30# / *#31# or *31# / #31# ) Works on some networks.Typing *0# or *nm# on the beginning of a txt message gives you detailed delivery report on some networks.. But turn off reports in message settings before
When the sim card-pin blocked type **042*pin2 old*newpin2*newpin2
