How to Use MMI and USSD Codes for Android

Man Machine Interface or MMI codes are codes you can enter into your phone 's dial pad to perform various functions. Supplementary Service (SS) and Unstructured Supplementary Service Data (USSD) communicate with your phone's carrier and can display information or enable certain service-related features. There are also manufacturer-specific codes that display information about your device and enable or disable certain features. This wikiHow article teaches you all the MMI codes for Android you could ever need. ^{[1]
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How to Use MMI Codes for Android

To Use MMI codes on your Android, open the Phone app and display the dial pad. Enter the code and tap the Call button as though you are making a call. MMI codes usually start with an asterisk (*). Some codes may not work on all devices.

Section 1 of 8:

Common MMI Codes

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These are some of the most popular codes people use: ^{[2]
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- Display your phone's IMEI number: *#06#
- Display information about your phone and its usage: *#*#4636#*#*
- Display your phone's MAC address: *#*#232338#*#*
- Toggle sending your Caller ID on or off: *31#
- Toggle turning Call Waiting on or off: *43#
- Show battery information: *#*#4636#*#*
- Show system and storage information: *#3282*727336*#
- Display your firmware version: *#*#4986*2650468#*#*
- Show local network information: *3001#12345#*
- Service Mode: *#*#197328640#*#*

Section 2 of 8:

Troubleshooting Codes

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Use these codes to test various hardware features:
- Test your Wi-Fi: *#*#232339#*#*
- Test your GPS: *#*#1472365#*#*
- Test Bluetooth: *#*#232331#*#*
- Check battery status: *#0228#
- Test your touchscreen: *#*#2664#*#*
- Test your vibration and backlight: *#*#0842#*#*
- Test light sensor: *#0589#
- Test your proximity sensor: *#*#0588#*#*
- Test audio and melody: *#*#0673#*#* or *#*#0289#*#*
- Test your real-time clock: #0782*#
- Do a packet loopback test: *#*#0283#*#*
- Run a Google Play service diagnostic: #*#426#*#
- Run a Field test: *#*#7262626#*#*
- Quick Test Mode: *#7353#
- General Test Mode: *#0*#

Section 3 of 8:

Device Information Codes

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Use these codes to find out information about your device: ^{[3]
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- Display your phone's IMEI number: *#06#
- Display information about your phone: *#*#4636#*#*
- Display your phone's MAC address: *#*#232338#*#*
- Display device lock status: *#7465625#
- Display battery information: *#*#4636#*#*
- Display system and storage information: *#3282*727336*#
- Display your firmware version: *#*#4986*2650468#*#*
- Display your local network information: *3001#12345#*
- Display your touchscreen version: *#*#2663#*#*
- Display your device's build time and change list number: *#*#44336#*#*
- Display your camera firmware information: *#*#34971539#*#*
- Display your Bluetooth address: *#*#232337#*#
- Display your RAM version: *#*#3264#*#*
- Display your SMS message center number: *5005*7672#
- Display calendar storage information: *#*#225#*#*
- Get your billing information: *3282#