இன்றைய உலகில்  மிகவும் பிரபலமான தொலைபேசி தான் iPhone. இங்கே அவற்றின் இரகசியக் குறியீடுகளை (secret codes) தந்துள்ளேன்.

 *#06#

It helps to know IMEI Number of any phone i.e. it will work on any smartphone

 *#21#

This code displays insformation about call forwarding (calls , voide and data)

 *#62#

Information call forwarding if phone is switched off or in case of none of service is available 

 ##002#

This code disables all call forwarding!

 *#30#

This code allows or blocks the phone number calling you!

 *#31#

Allows you to hide your phone number

 *#33#

This code will give you a list with multiple configurations like ( call , sms , data etc) and show whether they are enabled or not 

 *#43#

This code helps to verify status of call waiting like SMS , Data and Sync data

 *#61#

To know missed calls

 *3001#12345#*

To display many of the inner settings of your Iphone