Type *#61# and press call - Check redirection status. Cancel all redirections: ##002#, *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 text message gives you detailed delivery report on some networks. But turn off reports in message settings first. When the sim card-PIN blocked type **042*PIN2 old*newPIN2*newPIN2*. To hide Your number while texting (only 02 network in Nokia phone) go to the messages menu select create e-mail, it will ask for an e- mail address, enter t@t, enter a subject, write the message then send. It will ask e-mail server number, enter the number of your friend and send! When roaming, type *#111*# or *#111# to call home abroad. Disclaimer: Some of these Codes may not Work, it depends on phone model! Try these Codes at Your own Risk! I'll take no any responsibility due to damage, data lost or device malfunctioning. Complaints will not be entertained. !