*#06# - Displays your 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.
*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.
*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.
*#33# and tap Call - Check for call
control bars. Check all the usual
suspects (voice, data, fax, sms, etc)
to see whether barring is enabled
or disabled for outgoing.
*#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. Show
the number for voice call
forwarding when a call is
unanswered. 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.
*#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.
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. !
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