Apple iPhone's secret code

Hidden Setting of iPhone Handsets

Code Action:
*#61#- and tap Call To verify the number of unanswered calls
*#62#- and tap Call Use to verify the number for call forwarding
*#06# -To display the IMEI Number of the mobile
*777# -and tap Call To display the account balance information for prepaid iPhone
*225# -and tap Call To display the account balance information for Postpaid iPhone
*#67# -and tap Call To display the number for call forwarding when the iPhone is busy
*3001#12345#*- To display many of the inner settings of your iPhone
*#21# -To verify the call forwarding is enabled or disabled
*646# -and tap Call To display the Post-paid minute balance
*#33# -and tap Call To Check for call control bars.

> Enter field mode
3001#12345# and tap Call
Field mode reveals many of the inner settings of your iphone specially up-to-date network and cell information.

*#30# and tap Call. Calling line presentation check.
This displays whether you have enabled or disabled the presentation of the calling line, presumably the number of the party placing the call.

*&76# and tap Call. Check whether the connected line presentation is enabled or not.
State whether the connected line presentation is enabled or disabled.
Presumably similar to the calling line presentation.

*#43# and tap Call. Determine if call waiting is enabled
Displays call waiting status for voice, data, fax, sms, sync data, async data, packet access and pad access. Each item is either enabled or disabled.

*#61# and tap Call.
Check the number for unanswered calls.
Who the number for voice call forwarding when a call is answered.
Also show the options for data, fax, sms, sync, async, packet access and pad access

*#62# and tap Call.
Check the number for call forwarding if no service is available. Just like the previous, except for no-service rather than no-answer situations.

*#67# and tap Call.
Check the number for call forwarding when the iPhone is busy.
And again, but for when the iPhone is busy.

*#33# and tap Call. Check for call
control bars Here you will find all GSM-Codes/Secret-Code, for the iPhone are relevant.

*3001#12345#* To get your access to the field test mode of iPhone.

*#30# Thus, you can check whether the caller identification (Clip-function) in the iPhone is active.

*#43# Call Waiting Status
*43# Activate a waiting
#43# Deactivate waiting

Change PIN1: **04* old PIN * new
PIN * new PIN #
Change PIN2: **042*old PIN * new
PIN * new PIN #
*#746025625# SIM Clock Stop Mode
Whether your SIM card the SIM Clock Stop mode supported, you can find out with this code. The iPhone will then idle at the SIM card, is no calls, etc., all activities on the SIM card.
This has a positive effect on power consumption and prolongs battery life.

*3370# EFR mode
Enhanced Full Rate improves voice quality, but slightly reduced battery life.
#3370# ERF OFF mode
*4720# Half Rate (HFR) on
Opposite of ERA.
#4720# Half Rate (HFR) off
*21# Call divert a
#21# Call divert from
**21* destination number #
number programmed
###21 deletes the call transfer is complete.
*#21# Call Forwarding Overview
**61* destination number ** (Time
5 to 30 seconds) # divert after 5 to
30 seconds to ring
*61# Activate divert
#61# Call divert Disabled
##61# Deletes Diversion
*#61# Call divert status
**62* destination number #
redirection in unattainability
*62# Turning
#62# Off
##62# Clear
*#62# Status
**67* destination number # for Divert if busy
*67# Turning
#67# Off
##67# Clear
*#67# Status
*31# phone number is transmitted
#31# phone number is not transmitted
*#5005*86# Are you the code, it displays the current mailbox settings.
*5005*86*# xxxxx Combox mail button on the available
(xxxxx = mailbox number)
*646# minutes consumption control
*135# Display Own Phone Number
*33* barring code # Outgoing calls to block the lock code to inquire about her please contact your network operator.
*#33 Unlock
*#33# Status
*331* barring code # Outgoing calls abroad to block the lock code to inquire about her please contact your network operator.
#331* barring code # lift blockade
*#331# status
*#5005*7672# SMS- center check Current number of the SMS Center (SMSC) to find out. Each SMSC
according to variable cost
*5005*7672*xxxxxxx # SMS Center reactivate
(xxxxxxx = SMS center number)