How to completely remove the developer mode on Xiaomi Redmi 9C: 4 working ways

Why does the developer mode appear on Redmi 9C and can it be safely removed?

The developer mode on Xiaomi Redmi 9C is a hidden MIUI feature designed to test and debug the system. It is activated after repeatedly clicking on the build number in the About menu, but many users turn it on accidentally or on advice from the Internet to solve temporary problems. However, after activation, this mode remains in the settings, displaying additional menu items that can confuse or even lead to unstable smartphone operation.

The main problem is that turning off developer mode is not as easy as turning it on. Unlike many other Android smartphones, where it is enough to reset the developer settings, on Redmi 9C this item can remain active even after a reboot. Moreover, some “optimized” MIUI firmware hides the possibility of deactivation, which forces users to look for workarounds.

In this article, we will discuss 4 proven ways to remove the developer mode on Xiaomi Redmi. 9C — from standard methods through settings to radical (reset to factory and factory) ADB-We also find out what risks this mode carries for the average user and why it is better to deactivate it if you are not engaged in application development.

Method 1: Standard shutdown via MIUI settings

The easiest and safest method is to manually deactivate the developer mode, which works if you haven't made changes to system files through ADB or blocked MIUI settings.

1. Open the Settings app on your Redmi 9C.
2. Scroll down and select the About Phone section.
3. Find the MIUI version and click on it 7 times in a row, and the system should show a message: "You're already a developer!" or "Developer Mode is disabled."
4. Go back to the main settings menu and check if the Developer section has disappeared (usually located in the Additional or System section).

If the developer mode remains after these actions, try the following step:

• 🔧 Go to Settings. → For developers.
• 🔄 Scroll down and find the Developer Mode switch (may be called "On/Off").
• ❌ Turn it to the off position and confirm the action.

Close all background applications

Connect your phone to charge (recommended)

Make sure the battery is more than 30% charged.

Make a backup copy of important data-->

Important! On some versions of MIUI for Redmi 9C (e.g. MIUI 12.5 and later), the standard shutdown may not work due to the firmware features, in which case move on to the next method.

Method 2: Reset application settings (without data loss)

If the developer mode doesn’t turn off through the standard menu, try resetting all apps, which won’t delete your personal data (photos, contacts, messages), but will return system settings to factory values, including hidden features.

Instructions:

1. Open Settings → Applications → Application Management.
2. Click on the three dots in the top right corner and select Reset App Settings.
3. Confirm the action by clicking Reset Settings.
4. After the reboot, check if the Developer section has disappeared.

This works in 80% of cases if the developer mode was activated not through ADB or third-party utilities.

• 📱 Modified firmware (castom or "stitched" through Fastboot).
• 🔧 Changed access rights to system files.
• 🔄 Automatic activation of the mode through third-party applications (for example, to overclock the processor).

💡

If the developer mode is back after resetting the app settings, check the list of recently installed programs. Some optimization utilities (such as Greenify or SD Maid) can automatically activate it.

Method 3: Complete reset to factory settings (Hard Reset)

If previous methods didn't work, the radical solution is to reset the phone to factory settings, which is guaranteed to remove the developer mode, but also erase all user data, including:

• 📸 Photos and videos (if not saved in the cloud).
• 📱 Installed applications and their settings.
• 🔑 Accounts (re-entry to Google, Mi Account, etc.).
• 📞 Call log and SMS (if not synchronized).

How to run Hard Reset on Xiaomi Redmi 9C:

1. Back up important data via Settings → System → Backup or manually copy files to your PC.
2. Open Settings → About the phone → Reset settings.
3. Select to erase all data (reset to factory).
4. Enter a password (if requested) and confirm the action.
5. Wait for the process to be completed (it will take 5-10 minutes) and reset the phone.

⚠️ Warning: Once reset, the phone may request data from the last Mi Account linked to the device.If you don't remember the password, unlocking can take up to 72 hours (by Xiaomi's rules).

Method 4: Disconnect via ADB (for advanced users)

If you’re familiar with the command prompt, you can uninstall the developer mode via Android Debug Bridge (ADB).This method is suitable for cases where standard methods don’t work but require connecting the phone to a PC.

Step-by-step:

1. Download and install ADB Tools on your computer.
2. Turn on the phone to debug by USB (Settings → For developers → debugging by USB).
3. Get Redmi on board. 9C PC-only USB-cable and select File Transfer Mode.
4. Open the command prompt (Windows) or terminal (macOS/Linux) in the folder with ADB and type: adb devices Make sure the device is determined (serial number should appear).
5. Execute the command to disable developer mode: adb shell settings put global development_settings_enabled 0
6. Reboot your phone: adb reboot

After the reboot, check for the Developer section in the settings. If it's gone, the problem is solved. If not, try the additional command:

adb shell pm clear com.android.settings

⚠️ Attention: Misuse of the right ADB Do not execute commands unless you are sure of their purpose. For example, the command adb shell pm uninstall -k --user 0 com.android.settings will remove the Settings app, making the phone unusable without flashing it over.

What is dangerous the developer mode for the ordinary user

Many people mistakenly believe that the developer mode is harmless if you don't change the settings, but even having it can lead to the following problems:

• 🛡️ Security vulnerabilities: Some settings (e.g. Allow location simulation) allow you to bypass application protection.
• 🔋 Increased battery consumption: Activated debugging functions (e.g., Don’t turn off the screen) drain the battery faster.
• 📱 Unstable work: changing parameters Window animation or background processes can cause lags and errors.
• 🚫 Blocking updates: on some firmware MIUI Developer mode interferes with installation OTA-update.

Also, if you sell or transfer a phone, having a developer mode can make the new owner suspicious, and some diagnostic services (such as Xiaomi Service Center) consider it a sign of a “hacked” device, which can affect warranty service.

💡

Even if you don’t change your settings in developer mode, having it increases the risk of accidentally activating dangerous settings (e.g., OEM Unlocking, which makes it easier to steal data).

Frequent Mistakes and How to Avoid Them

When trying to remove the developer mode, users often make mistakes that make it more difficult, and here are the most common ones and ways to prevent them:

• 🔄 Incomplete reset: some "lightweight" firmware MIUI It doesn't reset the developer settings when you're in Hard Reset, so you can use Fastboot to completely reflash.
• 🔌 Shutdown USB time ADB: If you interrupt the command, the phone may freeze.
• 📱 Ignoring backup: Be sure to save data before reset. Recovering deleted files after Hard Reset is almost impossible.
• 🔧 Change unknown settings: There are options in developer mode that can permanently damage the phone (e.g., Disable). HW Don't touch them without understanding the consequences.

If after all the manipulations, the developer mode has not disappeared, the reason may be:

• 📌 Castomic Recovery: for example, TWRP Automatically activates the mode when booting.
• 🔄 Modified boot.img: If you have changed the boot partition, the developer mode can be sewn into the system.
• 📱 Viral software: some Trojans block the mode shutdown to mask their activity.

In such cases, the only way out is to completely reflash through the Mi Flash Tool with the official ROM from Xiaomi.

FAQ: Answers to Frequent Questions