GSM SECRET CODES.

GSM Secret Codes
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 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*
Airtel Secret Codes
Dial *123# to see your credit
balance. Dial *110# and follow the
options.
Dial *109*9898631902# to display
the call cost after each call.
If you are in Indiausing IDEA Pre or
Postpaid connection then dial
*101# you will get a secret menu
that will let you to activate or
deactivate any supported Idea
package for your mobile.