1. Android and iPhone Code: *#06#
Knowing this shortcode will prove very useful if you ever happen to lose your phone, given that you entered the code prior to misplacing your phone, that is. Entering this code into your keypad shows your display IMEI number, which is your phone’s identification number, and it’s unique to each smartphone.
2. Android Code: *#*#4636#*#*
This code will open up a menu that shows information about your phone’s data usages.
3. Android Code: *#*#0*#*#*
If you’re a smartphone user who’s obsessed with your image quality and how your screen looks, you’ll want to know this code. This will give you an LCD display test.
4. Android Code: *#*#34971539#*#*
Remembering this secret series of symbols and numbers means getting your display camera information instantly.
5. Android Code: *#*#232337#*#
Ever wondered what your Bluetooth address is? Type in this lengthy smartphone code and you’ll get it in seconds right in the palm of your hand.
6. Android Code: *#*#7262626#*#*
Using this code allows the field test feature to appear so you can see the exact strength of the signal your phone is getting. Knowing this is helpful in deciding whether or not to install a signal boosting system.
7. iPhone Code: *3001#12345#
This string of symbols and numbers performs the function of giving you a field test, showing cell signal and reception readings.
8. iPhone Code: #43#
Typing this secret code on your iPhone will allow you to disable call waiting.
9. iPhone Code: *43#
Did you accidentally type the code that disables call waiting? No worries, use this code to enable call waiting again.
10. iPhone Code: *3370#
If you’re ever somewhere where cell phone reception is poor, type in this code to turn on “enhanced full rate” mode. EFR mode improves your cell reception, but your battery life could be compromised.
11. iPhone Code: *67
Calling a number with this code directly before it will allow you to ring someone without your caller ID showing.
12. iPhone Code: *#67#
This code allows you to check call forwarding numbers. If your line ever gets too busy, you can assign another number for incoming calls to be directed to.