Apple iPhone's secret code

 Here are some more secret iPhone codes for you to enjoy.

*#06# - It is use to show IMEI of any phone means it will work on any Smartphone or mobile of any brand.

*#21# - It gives information about the configuration of forwarding (calls, voice and data.)

*#30# - Its functions is to report you either you enable / disabled status of calling line presentation.

*#33# - This secret of iPhone will give you a list with multiple configurations like (call, sms, data, fax, sms, etc) and show whether they are enabled or not.

*#43# - usually use to verify status of call waiting like sms, data, sync data, etc. in your iPhone.

*#61# - Checking of number of missed calls.

*#62# - verifies the number for forwarding calls in case of none of service is available.

*#67# - check the numbers for forwarding calls if your iPhone is busy.

*#76# - By typing this number will give you information about your line presentation enabled or disabled status.

*225# – This code is only available for prepaid lines in order to show the accounts bill balance.

*646# - Tel you information of the minutes remained in your account and only valid for only Postpaid ones.

*777# - You can know detailed information of account balance of prepaid iPhones

*3282# - Get know about the use of data information.

*3001#12345#* - it is use to reveal internal setting like Open the "Field Test" of the iPhone which enables us to learn many advanced data network from our iPhone. GSM, Wireless, 3G ... everything will be exposed here.

These codes are applicable to all models of Apple iphone like 1, 3G, 3GS, 4, 4S, 5 and definitely for the upcoming iPhone 5s and iPhone 5c. 

More  secret code....

*3001#12345#* and tap Call. Enter Field Mode.
Field mode reveals many of the inner settings of your iPhone, specifically up-to-date network and cell information.

*#06# Displays IMEI. 
No need to tap call IMEI is the unique identifier for your cell phone hardware together with your SIM information
it identifies you to the provider network

*777# and tap Call. Account balance for prepaid iPhone 

*225# and tap Call. Bill Balance. (Postpaid only)

*646# and tap Call. Check minutes. (Postpaid only) These three are pretty self explanatory
*#21# and tap call. Setting interrogation for call forwards. Discover the settings for your call
forwarding. You'll see whether you have voice, data, fax, sms, sync, async, packet access, and
pad access call forwarding enabled or disabled.

*#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 similiar 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 thenumber for unanswered calls.
Show 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.

*#06# Displays your IMEI on your
iPhone.

*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,
ie 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)

Check all the usual suspects (voice, data, fax, sms, etc) to see whether barring is enabled or disabled for outgoing.