*43#

Activate iPhone waiting mode

*#43#*

Deactivates iPhone waiting mode

*#31#

To hide your phone number

*3001#12345#

View existing networks on the iPhone

*#5005*7672#

Checking the SMS center

*#*#7780#*#*

Works for factory reset

*2767*3855#

Do a factory reset

*#*#197328640#*#*

Checking operators and internet

*#*#0673#*#* or ##0289##

Checking audio / voice

*#*#0842#*#*

Checks the vibration and flashlight

*#*#232331#*#*

Checks Bluetooth function

*#*#34971539#*#*

Checks iPhone camera information

*#*#1472365#*#*

Checks the iPhone GPS quality

*#*#0*#*#*

Checks the performance of the LCD screen

*#*#2664#*#*

Checks the touch screen capability

*#*#4636#*#*

Checks the iPhone network