Skip to content

July 20, 2018

Hidden smartphone codes for Android and iOS

by John_A

Julian Chokkattu/Digital Trends

Roughly 77 percent of Americans use a smartphone, according to a Pew survey, but phones still hide secrets that most people might not know about. Most smartphones have hidden functions that you can access by punching in specific strings of numbers and symbols. These “backdoors” gives you access to features that, for the most part, you will probably never need to use, but they can occasionally come in handy — and besides, cheat codes are always fun.

We’ve rounded up some of the more practical codes for both Android and iOS devices. To use them, open your phone’s dialer and type in them (depending on your phone’s make and model, you may also need to hit the call button).

Note that these codes may not work on every device; some service providers go so far as to disable most hidden codes on their phones. In addition, there is another type of code called a USSD (Unstructured Supplementary Service Data), which send a signal to your service provider when you input it; these codes are used for things like checking your data usage.

One warning: While some of these hidden codes are benign, others do things like factory reset your phone, so be careful not to input codes on a whim.

Android codes


Info/Test menu (opens a menu where you can get detailed information about your phone, data usage statistics, and more)

Analog and backlight test

Display IMEI number (The IMEI, or International Mobile Equipment Identity, is a unique identification number for every phone, which can be useful in case your phone goes missing)

LCD Display test

Display camera info

Completely wipe phone and reinstall firmware

Display MAC address

Display Bluetooth address

Field test (allows you to precisely gauge the strength of signals your phone is receiving, in case you are curious or want to install a signal boosting system)

Quick GPS Test

iPhone codes


Field test mode (provides info about cell signal, including more precise reception reading)

Check call forwarding number (you can designate another number to redirect calls to when your phone is busy)

IMEI number

Enable call waiting

Disable call waiting

Enhanced full rate (EFR) mode — This mode improves reception at the cost of battery life

Anonymous call (Your number won’t show up on the receiver’s caller ID)
Input *67 before you enter a phone number

Editors’ Recommendations

  • How to find a lost phone, whether it’s Android, iPhone, or any other kind
  • iPhone users can now access Morse code on Gboard for iOS
  • Common Galaxy Note 8 problems, and how to fix them
  • Can’t we all just drive along? The not-so-universal language of autonomous cars
  • Everything we know about Microsoft’s ‘Andromeda’ Surface Phone device

Read more from News

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Note: HTML is allowed. Your email address will never be published.

Subscribe to comments

%d bloggers like this: