The Android operating system is well known for its hidden features and easter eggs. One such area is using custom dialer codes to access various hidden apps and settings. Some of these codes are universal, which means you’ll get the desired output on any Android device, irrespective of them being a great flagship or a cheap budget phone. However, custom OEM skins (e.g. One UI by Samsung and MIUI by Xiaomi) and carrier-customized models often come with their own set of hidden codes.

Below you can find a bunch of generic as well as device-specific Android hidden codes. Give them a try and discover some of the handiest secret functionalities of your phone. If you don’t see your device listed or you want to submit a new code, send a message to Skanda Hazarika (SkandaH on the forums) with all the relevant details.

Table of Contents:

Structure of the Android hidden codes

The so-called hidden codes are basically part of the Man Machine Interface (MMI) schema. These are a bit different from the Unstructured Supplementary Service Data (USSD) codes, although both of them start with an asterisk (*) followed by digits that comprise of commands or data. Groups of digits may be separated by additional asterisks. The message is terminated with a hash symbol (#), but custom MMI codes may end with an asterisk as well.

While USSD codes are used to communicate with the mobile network operator’s servers for menu-based information services, mobile-money services, and location-based content services, the MMI Supplementary Service codes work completely offline.

Just like USSD, you have to dial the “hidden” codes on the stock dialer app to invoke the corresponding action.

Generic hidden codes

  • *#06#
    Displays IMEI number(s).

Android hidden codes IMEI

  • *#07#
    Displays the Specific Absorption Rate (SAR) value of the device.

Android hidden codes SAR

  • *#*#225#*#*
    Displays calendar storage information.

Android hidden codes calendarAndroid hidden codes FCM

  • *#*#759#*#*
    Displays the RLZ Debug UI with Unique Device ID and other data related to application installation. It’s also possible to turn on (and off) OEM mode through this interface.

Android hidden codes RLZ debug

  • *#*#4636#*#*
    Displays information about the phone, battery, and various network statistics.

Android hidden codes phone info

Special hidden codes for popular Android brands

The generic codes should work on every Android device out there. In case you’re looking for OEM-specific codes, take a look at the following index.


  • *#07#
    Displays the regulatory labels.
  • .12345+= (must be entered in the stock calculator app)
    Opens the engineering mode.


Google Pixel devices run an enhanced version of vanilla Android, which means you’re limited to the generic codes mentioned above.


  • *#*#2486#*#*
    Opens up the engineering mode. You may need to boot through the “BP Tools” section in the fastboot interface at least once before trying this code.
  • *#07#
    Displays the regulatory information.


  • *#*#372733#*#*
    Opens up the service mode (also known as the FQC menu).

Nokia Android hidden code service menu


  • 1+= (must be entered in the stock calculator app)
    Displays the company’s motto – “Never Settle” – on the calculator app.

OnePlus Android hidden code calculator

  • *#66#
    Displays the IMEI and MEID in an encrypted format

OnePlus Android hidden code encrypted IMEI

  • *#888#
    Displays the PCB version of the motherboard of the phone.

OnePlus Android hidden code PCB version

  • *#1234#
    Displays the software version.

OnePlus Android hidden code software version

  • *#*#2947322243#*#*
    Wipes out the internal memory (use with caution!).


  • *#800#
    Opens up the factory mode/feedback menu.

Realme Android hidden code feedback

  • *#888#
    Displays the PCB version of the motherboard of the phone.

Realme Android hidden code PCB

  • *#6776#
    Displays the software version and additional details.

Realme Android hidden code software info


  • *#0*#
    Opens up the hardware diagnostic menu.

Samsung Android hidden code hardware diagnosis

  • *#011#
    Displays network connection and serving cell related information.
  • *#0228#
    Displays battery status.

Samsung Android hidden code battery

  • *#0283#
    Opens up the packet loopback settings.

Samsung Android hidden code loopback

  • *#0808#
    Displays USB settings.

Samsung Android hidden code USB

  • *#1234#
    Displays the software version and additional details.

Samsung Android hidden code software version

  • *#2663#
    Displays advanced firmware version menu.

Samsung Android hidden code advanced firmware

  • *#7353#
    Displays the quick test menu.
  • *#9090#
    Displays advanced debugging tools.

Samsung Android hidden code advanced debug control

  • *#9900#
    Opens up system dump mode.

Samsung Android hidden code system dump

  • *#2683662#
    Displays advanced service mode.

Samsung Android hidden code service mode

  • *#34971539#
    Displays advanced camera firmware information.

Samsung Android hidden code advanced camera firmware


  • *#*#73788423#*#*
    Displays the service menu.
  • *#07#
    Displays certifications details.


  • *#*#64663#*#*
    Displays the hardware diagnostic menu (also known as the QC test menu).

Xiaomi Android hidden codes QC test

We hope this guide will get you in and out of hidden menus within Android. We’ll be updating this guide with more such codes for specific phones, so check back again in the future.

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