How to Open the Engineering Menu on Xiaomi Redmi Note 5: A Complete Guide with Codes and Warnings

Why do you need access to the engineering menu on the Redmi Note 5?

The Engineering Mode on Xiaomi smartphones is a hidden tool that the manufacturer leaves behind to test hardware components and debug firmware. On the Redmi Note 5 (codenamed whyred), this menu allows you to check the performance of sensors, adjust network settings, calibrate the battery and even change some system limitations. However, access to it requires caution: improper actions can lead to malfunctions in the device or even to its “bricking”.

Unlike the standard settings. MIUI, So you can use the engineering menu to give you low-level control over the hardware, and you can test the camera at the driver level, check the signal quality. GSM/LTE But it's important to understand that most of the options are for Xiaomi engineers and may not be documented. For example, changing the values in the Hardware Testing section without understanding the consequences can disrupt the sensors.

This article is for both experienced users and beginners who want to understand the hidden features of their Redmi Note 5. We will look at all the working ways to log into the engineering menu (including methods without ROOT), break down the main sections and warn against dangerous actions, and learn how to get it back if something goes wrong.

Official and unofficial ways to log in to Engineer Mode

There are several ways to open the engineering menu on the Redmi Note 5, but not all are equally secure.The official method involves using standard code that runs on most Xiaomi devices. However, on some firmware (especially custom ones), this code can be blocked, in which case you will have to resort to alternative options, for example, through applications or through the use of a computer. ADB-team.

Important: Before you try any of these methods, make sure your device has disabled the "Advertent Press Protection" feature in the screen settings, otherwise the system may ignore the code input.

• 📱 Standard code: The easiest way is to type the combination ##4636## or ##36446337## in the Phone app. MIUI modificationless.
• 🔧 Through the application: if the code does not work, you can install the utility MTK Engineering Mode (for MediaTek processors) or Qualcomm Engineer Mode (for Snapdragon). Redmi Note 5 is equipped with a Snapdragon 636 chipset, so the second one will fit.
• 💻 ADB-command: for advanced users. Requires debugging enabled USB and a computer with installed drivers ADB. Team: Adb shell am start -n com.android.settings/.EngineerMode
• 🔓 Hidden section in MIUI: On some firmware versions, the engineering menu is hidden in Settings → The phone. → Version. MIUI (You need to tap 7 times on the build number, and then go back).

⚠️ Note: If you use custom firmware (like LineageOS or Pixel Experience), the standard codes may not work, and the only reliable way to do this is to install a customized application or use a customized application. ADB.

Detailed instructions: how to enter through the dial code

This is the most versatile and secure method that works on most Xiaomi devices, including the Redmi Note 5. Follow the step-by-step instructions to avoid errors:

1. Open the standard Phone app (not a messenger or a third-party dialer!).
2. Enter one of the combinations: ##4636### - the main engineering menu (Testing Menu); ##36446337### - alternative code for some versions of MIUI; ##6484## - Hardware Test.

Once the last character (*) is entered, the menu should open automatically, and if it does not, check if your antivirus or random press protection is blocking access.

If none of the codes worked, it could mean:

• 🔄 You have a modified firmware installed where the engineering menu is disabled;
• 🛡️ The manufacturer has blocked access at the kernel level (often found on devices for the Chinese market);
• 📱 Your Redmi Note 5 is a different revision (e.g., Redmi Note 5 Pro has a different chipset and may require different codes).

What can you do with the Redmi Note 5 Menu?

The engineering menu is divided into several key sections, each of which is responsible for a specific group of functions. Below we will discuss the most useful and safe options that can be useful to the average user. Changing the parameters in the "RF Test" or "Hardware Test" sections without understanding the consequences can lead to loss of communication or incorrect operation of sensors.

One of the most popular sections is Battery Information, where you can see the actual battery capacity (not the one shown by MIUI), the wear and tear level, and even reset the charging statistics if the smartphone starts to run out quickly, but you should only reset the statistics after you completely discharge and charge the device to 100%, otherwise the system may miscalculate the remaining battery life.

In the Telephony Information section, it is useful to check the Network Type parameter – it shows what connection is currently being used (for example, the Network Type parameter, LTE or HSPA+). If Unknown or No Service is displayed here, it may indicate a problem with the SIM-link-card.

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If the Sensors Test light sensor shows zero in bright light, try to clean the area around the front camera of dirt – often this solves the problem without calibration.

Dangerous settings: what not to touch in Engineer Mode

Despite the temptation to dig into all the sections, some of them can irreversibly damage your Redmi Note 5. Below is a list of the riskiest options that are best avoided:

• ⚡ Band Selection (in section) RF Test: Change of supported frequencies LTE/3G It can cause network loss, and you can only restore the settings by resetting to the factory.
• 🔋 Battery Calibration: Incorrect battery calibration can cause sudden shutdowns or overheating. Redmi Note 5 is better to use the standard method of discharging / charging.
• 📡 Wi-Fi/Bluetooth MAC Address: Change MAC-Manually blocking access to certain networks (e.g., corporate networks).
• 🛠️ Hardware Test → Touch Screen: Testing a sensor with the wrong parameters can lead to “dead zones” on the screen.

Factory Reset is especially dangerous inside the engineering menu, which, unlike a standard MIUI reset, can erase data from internal memory, including files in the DCIM folder, and Mi Account recovery may not work if the device was not linked to the account in advance.

⚠️ Note: some Redmi Note 5 firmwares have Enable Diag Port on the engineering menu (under Telephony), which opens up a port for diagnosis via PC, which can be used by attackers to remotely access!

How to Get Out of the Engineering Menu and Get Everything Back

If you accidentally change your settings or just want to close the menu, do the following:

1. Press the back button (the arrow at the bottom of the screen) or the home button. In most cases, the menu will close without saving the changes.
2. If the menu is "hanging" or not responding, restart the device with a long press on the power button. This is a safe way that will not damage the data.
3. To undo changes (e.g. if you changed your network settings): Go to Settings → System → Settings Reset; Select Network Settings Reset (not a full reset!); Confirm action.

If the device starts to work unstable after the changes in the engineering menu (for example, quickly discharge or lose the network), calibrate the battery through a full discharge / charge cycle or reset the network settings, as described above, 90% of the time this solves the problem.

To completely reset all changes made through Engineer Mode, you can use the ADB command:

adb shell settings reset global

This command will return the system’s global settings to default values without affecting user data.

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If after changes in the engineering menu, the smartphone stopped turning on, try to go to Recovery mode (power button) + volume up) and wipe cache. This often helps with software failures.

Alternatives to the Engineering Menu: Safe Diagnostics

If you need to test out the hardware components of the Redmi Note 5 but are afraid to use Engineer Mode, there are a few safe alternatives:

• 🔍 Hidden test MIUI: Enter ##64663##, and the menu will open with screen, camera, speaker and microphone checks, and you can't break anything, because only tests are available.
• 📦 Annex "CIT" (Xiaomi Community Test: official tool from Xiaomi for testing sensors and modules. Available from the Mi App Store.
• 🛠️ AccuBattery: an application to monitor the state of the battery without the risk of damaging the settings.
• 📡 Network Signal Guru: Shows detailed information about the network signal (alternative to Telephony Information).

To test the sensors, you can use the Sensor Test app from Google Play, which displays data from the accelerometer, gyroscope, compass and other sensors in real time without requiring any data from the accelerometer, gyroscope, compass or other sensors. ROOT-If some sensor doesn't work, the app will show an error, which is a signal that you need to contact the service center.

If your goal is to improve performance or autonomy, consider alternative methods:

• 🔋 Disabling application background activity through Settings → Battery → Optimizing the battery;
• 📵 Switching to Battery Mode in Performance Settings;
• 🔄 Update MIUI Up to the latest version (often solves network and sensor problems).

FAQ: Answers to Frequent Questions