Xiaomi Poco X3 NFC is one of the most popular smartphones in the budget segment, but even it hides a lot of useful features under the hood. Developer Mode provides access to hidden settings that allow you to fine-tune performance, debugging and even extend the life of the battery.
In this article, we will discuss not only the standard way to turn on the developer mode, but also alternative methods (for example, through ADB), explain why the average user needs it, and warn against dangerous experiments. If you want to overclock animations, turn off background processes or test new MIUI features before the official release, this is the guide for you.
Important: Developer modes on different versions MIUI (12, 13, 14) may vary slightly in the location of menu items, but the essence remains the same. X3 NFC Based on the latest updates of 2026.
What is a developer mode and why you need it on the Poco X3 NFC
Developer Options is a hidden menu in Android designed to test and debug applications. On Xiaomi Poco X3 NFC, it allows you to:
- 🔧 Speed up interface animation (reduce transition delays between screens).
- 📱 Disable background processes to save battery power.
- 🛠️ Enable debugging on USB (USB Debugging for working with ADB custom-made.
- 📊 Monitoring the use CPU/GPU real-time.
- 🔄 Reset application settings without deleting data.
For the average user, the most useful features are the functions of speeding up the interface and limiting background activity. For example, turning off the animation of the window can make the smartphone subjectively faster by 10-15%, but OEM Unlocking (unlocking the bootloader) or Force GPU Rendering (forced rendering via the GPU) require caution – incorrect settings can lead to overheating or crashes.
On the Poco X3 NFC, the developer mode also allows:
- 🔋 Turn off optimization MIUI for individual applications (useful for games and heavy programs).
- 📶 Manually choose the type of network (2G/3G/4G), If the automatic system is not operating smoothly.
- 🎮 Activate Gamer Mode with Advanced Performance Settings.
⚠️ Note: Some parameters (e.g. Disable) HW Overlays can lead to graphic artifacts or increased battery consumption. If you're not sure, don't change the default values!
Standard way to enable developer mode
Activating the hidden menu on the Poco X3 NFC takes less than a minute, but requires precise follow-up.
- Open the Settings app** (Settings).
If done correctly, the main menu “Settings” will appear a new section – “Additional settings”, and in it – the item “Developer options”.
Check that you are using the line "Version". MIUI", not "Device model"|Make sure you do not activate "Guest Mode" or "Second Space"|Reboot your smartphone and try again.|Update. MIUI Up to the latest version, if you use outdated firmware-->
On some MIUI 14 firmware, the "Developers" item may be hidden in the "System & Device" submenu, and if you don't find it, search by settings (the magnifier icon at the top of the screen) and type in the developer's request.
Alternative activation methods (if the standard one does not work)
In rare cases, the standard method may not work, for example, due to firmware glitches or corporate policy constraints (if the device was issued by the company), then alternative methods come to the rescue:
Method 1: Through ADB (for power users)
If you have access to your computer and have ADB Tools installed, you can enable the developer mode by the team:
adb shell settings put global development_settings_enabled 1
adb shell am broadcast -a com.android.settings.action.DEVELOPMENT_SETTINGSAfter completing the commands, restart the smartphone - the item "For developers"** should appear in the settings.
Method 2: Through the Engineering Menu (code ##4636##)
Enter the phone app** code:
##4636##In the menu that opens, select “Phone information” and tap “Build number” several times, which may work on some custom firmware.
⚠️ Warning: Engineering menu (#4636###) allows you to change network settings, which can lead to loss of connection.
Yeah, it worked the first time.|Yes, but I had to find alternative ways.|No, it's my first time.|I don't know why you need him.-->
What Developer Mode Settings to Change Safely to Poco X3 NFC
Not all settings in the Developer Menu** are equally useful, and we have compiled a list of safe settings that can be changed without risk to the system:
| Setting up | Recommended value | The effect |
|---|---|---|
| Windows animation scale (Window animation scale) | 0.5x or Disconnected | Accelerates the opening/closing of applications |
| Transition animation scale (transition animation scale) | 0.5x | Removes delays when swiping between screens |
| Background Process Limit (Background Process Limit) | Maximum 2 of the process | Saves battery, but can close applications |
| Do not turn off the screen while charging (Stay awake) | On. | Convenient for watching videos or navigation |
| Debugging by USB (USB debugging) | Includes (only when necessary) | Needed to work with ADB and custom firmware |
Be careful with the following parameters:
- ⚠️ Force GPU Rendering – can cause overheating and accelerated battery discharge.
- ⚠️ Disable HW Overlays – Leads to Artifacts of Graphics in Games.
- ⚠️ OEM Unlocking – Unlocking the bootloader will reset all data!
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Before changing any settings, back up your important data via Settings → System → Backup. This will take 5 minutes, but save your files if you crash.
What to do if the developer mode disappears after the MIUI update
After major MIUI updates (e.g., version 12 to version 13), the Developer Menu** may be missing, due to a hidden reset.
- Repeat the standard inclusion procedure (7 taps according to the MIUI version).
- If it doesn't work, reset your application settings: Go to Settings → Apps → App Management. Slip on the three dots in the upper right corner and select Reset App Settings.
"For developers."
If the problem persists, try rolling back the update via Settings → About Phone → System Update → Three Dots → Select the Service Pack. Download the previous version of MIUI from Xiaomi’s official website and install it manually.
Why Xiaomi is hiding the default developer mode?
How to turn off the developer mode on Poco X3 NFC
If you no longer need advanced settings, the Developer Menu** can be deactivated.
- Go to Settings → Additional → For developers.
- In the upper right corner, tap the switch (On/Off).
- Confirm the action in the dialog window.
Once you turn off, all the options you have changed will reset to the default values, and if you need to access the menu again, you will have to repeat the activation procedure (7 taps according to the MIUI version).
On some versions of MIUI, the For Developers option** may remain in the settings even after you turn off, but all options inside will be inactive. To completely hide the menu, reset (Settings → About Phone → Settings Reset) but this will delete all your data!
Frequent Mistakes and How to Avoid Them
When working with the developer mode, Poco X3 NFC users often face typical problems, and here are the most common ones and ways to solve them:
- 🔄 Not included after 7 taps: Check that tapa is on the version MIUI, Make sure you don't have guest mode or second space activated».
⚠️ Note: If after changes in the developer mode, the smartphone began to spontaneously restart or issue application errors, reset settings through Settings → System system → Resetting settings → Resetting all settings (without deleting data) will return all settings to factory values.
💡
Developer mode is a powerful tool, but it requires caution, and always write down the original values before you change them so you can get it back.