Ever wondered why your Xiaomi doesn’t allow you to install third-party firmware, change system fonts, or activate hidden features like overclocking the processor? All these restrictions remove the developer mode, a hidden settings section that gives access to advanced MIUI capabilities. But beware: ignorance of the nuances can turn a smartphone into a “brick” or deprive you of warranties.
In this article, we’ll look at more than just how to turn on Xiaomi’s developer mode (including Redmi models, POCO We'll also talk about what features to activate first and which should not be touched, how to get around common errors (such as missing the "Build Number" item after the update), and what to do if access to the settings suddenly disappears. We will focus on a unique feature. MIUI 15: Automatically resetting some developer settings after a reboot is a trap that one in five users falls into.
What is a developer mode and why it is needed
Developer Mode is a hidden Android settings section designed to test and debug apps, and on Xiaomi smartphones, it gives you access to:
- 🔧 Debugging by USB — Without it, it is impossible to connect to the PC through ADB or flash the device through Fastboot.
- ⚡ Speeding up animations – reducing screen transition times (useful for older models like the Redmi Note 8).
- 📱 Simulation of additional screens – for example, to test adaptive applications.
- 🔒 Unlocking the bootloader is the first step to install custom firmware (LineageOS, Pixel Experience).
- 📡 Manual network setting – choosing the type of modem connection (LTE/3G/2G) or priority SIM-map.
However, not all features are equally useful, such as activating OEM unlocks on new models (Xiaomi 14, Redmi). K70) It automatically cancels the warranty, and the device itself warns you when it first turns on. GPU-rendering can lead to graphic artifacts in games.
⚠️ Attention: Starting with MIUI 14, Xiaomi blocks access to some developer settings (e.g., Background process limit) on devices with the unlocked bootloader.This is done to “protect users from their loved ones».
Step-by-step: how to turn on the developer mode on Xiaomi
The activation process is the same for all devices on MIUI, but there are nuances for different versions of the shell.
- Open the Settings. → The phone.
- Find the MIUI version and tap it 7 times in a row, and after 3-4 taps, a pop-up will appear, "There are 4 steps left to become a developer."
- At the 7th press, the system will give a notification: “You became a developer!”. Now a new section will appear in the main settings menu – Additional → For developers.
If the MIUI version is missing (this happens after resetting or on some regional firmware), try:
- 🔍 Go to Settings. → System system → About the device → Linux kernel (for MIUI 15).
- 🔄 Switch to English interface language – sometimes the item appears only in the original localization.
- 📱 Install a third-party application like QuickShortcutMaker and manually run the activity of com.android.settings.DevelopmentSettings.
Stick to the version. MIUI exactly 7|Make sure that the notification has been received|Check the presence of the section "For developers" in the settings|Do not include unknown parameters without studying-->
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If after the MIUI update the developer section is missing, try tapping again on the firmware version - sometimes the system resets access.
Top.-5 useful functions of the developer mode on Xiaomi
Not all options on the developer menu are equally useful, but we have selected the most secure and practical options that will not harm the device:
| Function | What do you need? | Risks. |
|---|---|---|
| USB debugging | Connecting to a PC for firmware, backup or ADB-team | Vulnerability to malicious applications if permanently enabled |
| Do not turn off the screen during charging | Useful for using your phone as an alarm clock or media player | Accelerated wear and tear OLED-screen (risk of pixel burnout) |
| Background activity → Standard limit | Prevents automatic closure of applications (e.g. music players) | Increased battery consumption |
| Enable the HCI Bluetooth log | Diagnostics of problems with connecting headsets, fitness bracelets | Takes up space in memory (logs weigh up to 10 MB/day) |
| Animation speed (0.5x) | Accelerates transitions between screens | May cause lags on weak devices (Redmi 9A) |
The feature, Allow location simulation, allows applications like Fake GPS to change coordinates, but once activated, some services (Google Maps, Yandex.Navigator) can block access to maps for 24 hours.
Debugging by USB|Accelerating animation|Background processes|Simulation of location|I'm not turning anything on.-->
Dangerous settings: what not to touch without need
Some parameters can permanently disable a device or make it vulnerable to attack.
- 🚨 Unlocking OEM — opens access to the bootloader's firmware, but cancels the warranty and increases the risk of bricks.
- 🔥 Forced. GPU-acceleration – can cause overheating and graphic glitches (especially on the POCO F3 Snapdragon 870).
- 📵 Turn off the absolute volume level – disturbs the sound balance in Bluetooth headsets.
- 🔄 Reset network settings – deletes all stored Wi-Fi passwords and VPN-configuration.
⚠️ Note: On devices with MediaTek (Redmi Note 12, POCO M5) Changing the Modem Band settings can cause the network to lose, and you can only restore them through the engineering menu (#4636##), but it requires knowing your operator's frequencies.
If you accidentally activate a dangerous setting, don't panic. Most settings are reset after:
- ✅ Reboot the device (except for OEM-unlock).
- ✅ Resetting settings through Settings → Additionally. → Resetting settings.
- ✅ Fastboot Firmware rollback (if the phone is still on).
The Developer Mode is Lost: What to Do?
Sometimes the Developer section disappears after the MIUI update or reset.
| Problem. | Reason. | Decision |
|---|---|---|
| The MIUI version is inactive | Update firmware reset the status of the developer | Hit the MIUI version 7 more times |
| Section vanished after dump | Resetting settings disables the developer mode | Repeat activation (see steps above) |
| No "On the phone" clause. | Regional firmware (for example, for India) | Use QuickShortcutMaker or change region |
| Access blocked | Safe Mode or Parental Controls Activated | Get out of Safe Mode or Disable Restrictions |
If nothing helps, check:
- Are there antiviruses (e.g. Avast or 360 Security) that block system settings?
- Is the Guest Mode activated – many functions are disabled in it?
- Is the firmware damaged (signs: constant reboots, errors in settings).
What if after the update MIUI 15 lost all the settings of the developer?
How to turn off the developer mode on Xiaomi
If you no longer need advanced settings, you can deactivate them.
- Partial Disconnection: Return all settings to the off state manually. The developer section will remain, but will not affect the system.
- Complete Deletion: Reset your phone through Settings → Additional → Reset. This will delete all data, including developer status.
- For MIUI 15: Use the team. ADB: adb shell settings put global development_settings_enabled 0 After completion, the section will disappear from the menu.
⚠️ Note: On some devices (Xiaomi) 13T, Redmi K60) After disabling the developer mode, it may be necessary to reactivate through 7 taps according to the version MIUI — Even if you just turned off one parameter, it's a firmware bug that's only fixed in the MIUI 15.1.3.
Frequent Mistakes and How to Avoid Them
Even experienced users sometimes have problems with the developer mode, and consider typical scenarios:
- 🔌 «Debugging by USB Not working": Problem: When connecting to a PC, the phone is not detected in ADB. Solution: Make sure that Xiaomi drivers are installed on the PC USB Drivers, and in the developer settings included item Debugging by USB (security parameters) and the connection permission (pop-up on the phone) is confirmed).
- 🔄 «Settings are reset after rebooting": Problem: In MIUI 14/15 Some parameters (e.g. Background Activity) return to standard values. Solution: This is a feature of Xiaomi. Use applications like MacroDroid to automatically enable the desired options after the reboot.
- 📵 «Disappeared item "For developers" after the update: Problem: After updating through OTA Solution: Slip on the version MIUI 3-5 times – sometimes the system forgets the status of the developer.
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Before you manipulate the developer mode, backup your Settings → System → Backup. This will save your data if something goes wrong.