Last Updated on 6 days ago by Mamun Miah

Understanding the Secret Code *#*#4636#*#* Ever stumbled upon the mysterious *#*#4636#*#* code? This isn’t your average series of numbers it’s a special code you can dial into your Android phone to access hidden settings and details about your device’s operations.

The *#*#4636#*#*code is a “hidden testing menu” on Android devices, which displays information about phone settings and usage statistics.

When functioning correctly, entering this code should present you with four options:

  • Phone Information
  • Battery Information
  • Usage Statistics
  • Wi-Fi Information

You tried the magic code, and nothing happens frustrating, right? When *#*#4636#*#* is unresponsive, it could be due to manufacturer or carrier restrictions or a need for permission adjustments. But don’t worry, there are ways to resolve this without any extra apps.

Let’s read this article to fix the issue.

How to Use the *#*#4636#*#* Code

To use this secret code, follow the steps outlined below:

  1. Open your phone’s dialer.
  2. Enter the code *#*#4636#*#*.
  3. The testing menu should appear, providing various options for you to explore.

Common Issues with the *#*#4636#*#* Code

Like any feature, the *#*#4636#*#* code is not without its issues. Here are some common problems users face and how to resolve them:

If you notice that the code doesn’t work on your device, it could be due to multiple reasons:

Default Dialer

If you have installed a third-party dialer app and set it as your default dialer, you may face issues with the *#*#4636#*#* code not functioning correctly. To resolve this, set the default smartphone dialer to the built-in or system dialer.

Dial Error

Sometimes, certain codes may not work on your device. If this is the case, try using only *#* at the beginning of the code and only #*#* or #* at the end of the code. For example, *#*4636#*#* or *#*4636#.

Why the *#*#4636#*#* Code Might Not Work

There could be several reasons why the ##4636## code isn’t working on your Samsung device:

  • Carrier Restrictions: Some carriers restrict access to these secret codes.
  • Software Updates: Newer updates might have disabled the feature.
  • Device Variations: The code might not work on certain Samsung models.

Solving the *#*#4636#*#* Not Working Problem

Here are some steps you can take to fix the ##4636## not working issue on your Android Smartphone.

Method 1. Effective Solutions to Restore *#*#4636#*#* Functionality

The *#*#4636#*#* code is generally easy to use, but many users face difficulties while using it. Here are some simple steps you can take to resolve the issues:

1. Verify Your Phone’s Compatibility

The first step in troubleshooting is to verify your phone’s compatibility with the ##4636## code. Some Android phones may not support this code. To check compatibility, go to your device settings and check both the model number and Android version.

2. Enter the Code Correctly

One common reason for the ##4636## code not working is incorrect entry. Ensure that you enter the code accurately, including all of the asterisks and hashtags. The correct code is ##4636##.

3. Update Your Phone’s Software

An outdated software version can cause the ##4636## code to stop working. Always ensure that your phone’s software is up-to-date to ensure smooth and efficient operation. You can check for available software updates in your device settings.

4. Clear App Cache

Sometimes, the app cache for the Phone app may become corrupted, causing problems with the app, such as preventing it from launching or opening the ##4636## menu. To clear the app cache, go to your device settings, find the “Apps” or “Application Manager” section, navigate to the Phone app, and select “Clear cache”.

5. Reset Network Settings

If your phone is having trouble connecting to the cellular network or Wi-Fi, it may prevent the ##4636## code from working. Try restarting your phone, resetting your phone’s network settings, or connecting to a different network to troubleshoot the connection issue.

6. Update Device Software

Sometimes, all you need is the latest software patch. Check for updates in ‘Settings’ > ‘System’ > ‘System update’.

7. Try Alternative Dialer

If you’ve installed a third-party dialer, switch back to your built-in dialer app and try again.

8. Factory Reset (Last Resort)

Only consider this if all other steps fail, as this will erase all data from your device. Back up important files first, then go to ‘Settings‘ > ‘System‘ > ‘Reset options‘ > ‘Erase all data (factory reset)’.

By following these steps, you give your device the best shot at restoring access to the ##4636## service menu.

Method 2. Install a Third-Party App TrueCaller

If the code still doesn’t work, you can install a third-party application, like TrueCaller. Follow these steps:

  • Visit the Play Store.
  • Search for “TrueCaller.”
  • Install the application on your phone.
  • Open TrueCaller and locate the “Dialer Pad.”
  • Enter the *#*#4636#*#* code through the TrueCaller dialer pad.

Method 3. Use Shortcut Master Application

If previous solutions are unsuccessful, try the following:

  1. Download the Shortcut Master app.
  2. Install and open the app.
  3. Search for `$TestingSettingsActivity` within the app.
  4. Launch the activity found.

Method 4. Use 4G LTE Only Mode App

Using 4G LTE Only Mode Apps and Other Alternates If you’ve hit a wall trying to get ##4636## to work, there’s no need to fret — alternatives are at your fingertips. Consider the ‘4G LTE Only mode’ app, as it’s a user-friendly solution to manually switch your phone to LTE-only mode. Installing it is a cakewalk:

  1. Download from Google Play: Directly download the ‘4G LTE Only mode‘ app from the Google Play Store to ensure you’re getting a safe version.
  2. Navigate the App: The app’s interface is intuitive. Simply select the ‘Set preferred network type’ and choose ‘LTE only’ to switch to 4G.

Not only does this app allow you to force 4G connectivity, but it also comes with handy features for reviewing battery information and usage statistics, making it a robust alternative.

Read an article on how to use Use 4G LTE Only Mode software to boost your network speed.

Method 5. Alternatives to *#*#4636#*#* Code (for accessing some information, not a solution to the main problem.)

If you’re unable to use the ##4636## code on your Samsung or Huawei device, there are alternative methods to access similar information.

Here’s how you can find recently used apps on Samsung and Huawei phones:

  • First Method: Go to Settings > Apps & notifications > Recent opened apps (only applicable if you have Android Oreo updated on your smartphone).
  • Second Method: To find your last used downloaded app, follow these steps:
  • Open the Play Store app.
  • Click the Menu Button (in the top-left corner) > My apps & games > installed.
  • Change the sorting method to ‘Last used‘.

Method 6. Second Alternatives to the *#*#4636#*#* Code (for accessing some information, not a solution to the main problem.)

If the *#*#4636#*#* code doesn’t work on your device, there are alternative codes you can use:

  • For Samsung smartphones, try *#0*#.
  • For Realme or Oppo smartphones, try *#899#or *#1234# for the software version.
  • For Xiaomi or Poco devices, try *#*#64663#*#*.
  • Check for MIUI Dialer
    • Ensure that your phone is using the MIUI dialer app. Some Xiaomi phones might come with Google’s dialer pre-installed, depending on the region, and the secret codes often only work with the MIUI dialer.

(Note: The above guide is applicable for most Android devices including brands like Samsung, Huawei, Xiaomi, OnePlus, Oppo, Vivo, Google, Sony, LG, Nokia, Motorola, HTC, Lenovo, ASUS, BlackBerry, ZTE, Alcatel, Honor, Meizu, Realme, Infinix, Tecno, Panasonic, and Micromax.)

Also may work on these devices model below.

Realme C15, Realme C2, Realme 5 Pro
Samsung, Samsung J2, Samsung s10, Samsung a50
Huawei, Huawei Y9, Honor, Honor 8x, Honor 9 Lite
Oppo, Oppo A5S, Oppo f11
Android 13, Android 12, Android 10
Oneplus Nord, Oneplus 9 pro, Oneplus nord 2

*#*#4636#*#* not working on Iphone

This code is not applicable to iPhones as they run on iOS and do not recognize this USSD (Unstructured Supplementary Service Data) code.

If you are looking to access similar information on your iPhone, iOS provides different methods to check various types of information about your device.

A few things you can do on an iPhone to access information

1. To Check Usage and Battery Information

      • Go to **Settings**.
      • Tap on **Battery**.
      • Here you can see your battery usage and activity.

2. To Find Detailed Phone Information

      • Go to Settings.
      • Tap on General.
      • Select About.
      • This section will provide you with details such as the software version, model number, serial number, and more.

3. To Perform Diagnostics

iOS does not have a built-in user-facing diagnostic tool like the Android code you mentioned. However, if you’re experiencing issues with your iPhone, you can:

      • Contact Apple Support or make an appointment at an Apple Store for assistance.
      • Use the Apple Support app to run some basic diagnostics and get help.

4. To Access Field Test Mode (for signal information)

      1. Open the Phone app.
      2. Dial `*3001#12345#*` and press the call button.
      3. This will open the Field Test mode, which gives you information about cellular signal strength and more.

5. Developer Options

If you’re looking for developer-related settings (similar to what Android offers), you can enable Developer Mode by connecting your iPhone to a Mac and using Xcode or by installing a beta version of iOS that automatically enables Developer Mode.

6. Carrier Settings

For carrier-specific settings and information, you can go to Settings > Cellular or Mobile Data. Sometimes you may see an option to update carrier settings, which you should do to ensure optimal performance.

Remember that the available options and settings might vary slightly depending on your iPhone model and the version of iOS it’s running. If you need help with a specific task or setting, you may want to clarify what you’re trying to accomplish, so I can provide more targeted assistance.


Is the ##4636## Code Safe to Use?

Generally, the ##4636## code is safe to use. It’s a built-in diagnostic tool on many Android devices, designed to provide information and testing capabilities. However, it’s important to exercise caution when using it.

Why is the *#*#4636#*#* code important?

Why is the ##4636## code important? The ##4636## code acts like a backstage pass to your Android device’s exclusive information and settings. It offers insights into battery statistics, app usage data, and in-depth network information, which can be invaluable for troubleshooting or fine-tuning your device’s performance. Plus, it can aid in diagnosing pesky network problems without requiring extra apps—making it a favorite tool for power users and developers alike.

Why is the ##4636## code not working on my Android 10,12 or 13 device?

This issue has been mostly observed in OnePlus devices. After users updated their devices to Android 12, they were unable to use the *#*#4636#*#* code to open the testing window. In such a case, try using *#899# OR *#1234#.

Can performing a factory reset affect the functionality of *#*#4636#*#*?

Can performing a factory reset affect the functionality of ##4636##? Performing a factory reset on your device reverts it to its original state, which can theoretically restore access to the ##4636## code if the issue was software-related. However, if restrictions are due to updates from the manufacturer or network provider, a factory reset might not regain the lost functionality. Always back up your data before a reset, as it will erase everything on your device.

Disclaimer: The ##4636## code is a diagnostic tool intended for advanced users and developers. Modifying settings in this menu without proper knowledge can affect your device’s functionality. Use with caution and consult official resources or experts if unsure.


While the ##4636## code offers valuable insights into your Android device, it’s not universally accessible. By following the troubleshooting tips in this guide, you can increase your chances of accessing this hidden menu and utilizing its features effectively.

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Tips and Tricks,

Last Update: June 15, 2024