If you own a Xiaomi TV or smartphone and come across a mysterious “bunny” mention, it’s likely a hidden engineering mode or test menu that the manufacturer leaves to diagnose the device, which allows you to access advanced settings, hardware information, and sometimes even undocumented features that are not available in the standard interface.
Enabling the “bunny” (or Rabbit Mode, as it is sometimes called in English sources) does not require root rights or firmware hacking, but the process may differ depending on the model and version of MIUI/PatchWall. It is important to understand that activation of this mode is intended for experienced users - improper actions can lead to device failures or even loss of warranty. In this article, we will discuss in detail all the ways of inclusion, possible risks and hidden opportunities that open after activation.
What is a “hare” on Xiaomi and why you need it
The term “hare” is a slang name for a service menu that Xiaomi integrates into its internal testing and debugging devices, which can be used in official documentation as:
- 🔧 Engineer Mode (engineering menu) – for the diagnosis of hardware components;
- 📊 Factory Test – check the performance of the screen, speakers, camera;
- 🚀 Hidden Settings – Access to undocumented system parameters.
On Mi TVs or Redmi Smart TVs, the hare most often opens menus to calibrate the screen, test HDMI ports, check the matrix for broken pixels. On smartphones, this can be access to Qualcomm/Mediatek modem settings, battery tests, or even hidden camera options. For example, in some models, you can turn on 8K video recording through this menu, even if the option is not available in the standard interface.
⚠️ Note: Not all functions in the service menu are safe. DDI (display-driver), TP (touchscreen RF (radio frequency modules, which can lead to irreversible consequences, we recommend backing up data before experiments.
How to turn on the “hare” on Xiaomi TVs (Mi TV, Redmi TV)
On TVs, the procedure for activating the hidden menu depends on the firmware version of PatchWall. Below is a universal method that works on most models released after 2019 (including Mi TV 4A, Mi TV 4S, Redmi Smart TV X, etc.).
Step 1. Take the remote control of the TV and press the buttons successively:
Menu → Settings (⚙️) → All settings → About Device → PatchWall Version (click 5-7 once in a row)Step 2. After a few taps, the “You’ve become a developer” notification (or similar) will appear on the screen, which means that the hidden options are unlocked. Now go back to the main settings menu, and a new Developer or Service menu will appear.
Step 3. In the service menu, select Factory Test. Here you will find tests for:
- 📺 Screen - checking color reproduction, broken pixels, backlights;
- 🔊 Audio – test speakers and microphones;
- 📶 Wi-Fi/Bluetooth — diagnostics of communication modules;
- 🔌 Ports - check HDMI, USB, AV.
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If nothing happens after tapping on the PatchWall version, try using the Xiaomi Mi Remote remote (a smartphone app) – sometimes standard remotes do not recognize the combinations.
Activation of the “hare” on Xiaomi smartphones (MIUI)
On Xiaomi, Redmi or POCO smartphones, the hidden menu is activated via an engineered mode code or a special combination of touches.
| Processor type | Entry code. | What's opening |
|---|---|---|
| Qualcomm (Snapdragon) | ##4636## | Menu of Testing and Use Statistics |
| Mediatek (Helio, Dimensity) | ##36446337## | Engineer Mode with Modem Settings |
| Any processor | ##284## | Touchscreen test |
| Xiaomi/Redmi (Universal) | ##6484## | Menu testing hardware components |
After entering the code, you will be taken to the menu with tabs:
- 📱 Phone Information – Network Data, IMEI, signal;
- 🔋 Battery Information - detailed battery statistics (voltage, temperature, charging cycles);
- 📡 Usage Statistics – Application and Process Time;
- 🛠️ Testing – tests of camera, speakers, vibration.
⚠️ Note: Engineer Mode menu on Mediatek has a section MTK Settings where you can change network settings (e.g. enable support) 5G This can lead to loss of communication or blocking IMEI! Be careful.
Hidden functions that opens the “hare”
In addition to diagnostics, the engineering menu unlocks undocumented features that Xiaomi hides from ordinary users.
1. Unlock additional camera permissions
In some models (for example, Xiaomi 13 Pro or Redmi Note 12 Pro+) you can include:
- 📸 Videotaping in 8K@24fps (Even if the option is not available in the standard camera);
- 🔍 Pro Video mode with manual bitrate setting;
- 🌓 Night mode for front camera.
2. Accelerate the system animation
In the Developer Options menu (which appears after activation of the "hare"), you can reduce the duration of window animation to 0.5x, which makes the MIUI interface noticeably faster.
Settings → Additional → For developers → Animation speed (Window/Transition)3. Testing of hidden gestures
On Mi TVs with PatchWall, experimental control gestures can be enabled via the service menu (for example, swiping your finger across the top frame of the screen to call the settings panel).
How to Enable 8K Video on Xiaomi 13 Pro
Possible risks and how to avoid them
Despite its usefulness, activating hidden modes poses several dangers:
⚠️ Attention: Change of parameters NV RAM (Non-volatile memory in the engineering menu can lead to loss of memory IMEI It will not be possible to restore it without specialized equipment (for example, Mi Flash Pro.
Main risks:
- 🔄 Resetting – some tests (such as Factory Reset in the service menu) can return the device to factory settings without warning;
- 📉 Loss of productivity – wrong settings CPU governor or GPU Rendering can cause overheating or lags;
- 🚫 Block Updates – If you change the firmware version manually, the system may stop receiving updates OTA-update.
How to minimize the risks:
- Create a backup via Mi Cloud or TWRP (for smartphones)
- Do not change the parameters whose names contain NV, IMEI, RF.
- After the tests, return all settings to the Default state.
☑️ Safe work with the engineering menu
Frequent mistakes and their solutions
If the “hare” does not turn on or the menu does not open, check the following points:
| Problem. | Possible cause | Decision |
|---|---|---|
| Code doesn't work. | Outdated firmware | Update MIUI to the latest version |
| The menu opens but is empty. | Restrictions of regional firmware | Install a global version of MIUI |
| After entering the code, nothing happens. | Blocking by the operator | Try entering the code through the Phone app (not the keyboard). |
| The TV does not respond to the button combination | The original remote | Use the official Mi Remote app |
If you accidentally changed a critical setting (for example, you turned off the touch screen), try:
- Perform a soft reset (press the power button for 10 seconds);
- Enter Power + Volume Up and select Wipe Cache
- Flash your device via the Mi Flash Tool (for smartphones) or USB Burning Tool (for TVs).
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If the device stopped turning on after the changes to the engineering menu, do not try to re-enter the “hare” mode. Use official firmware tools from Xiaomi to avoid “bricking”.
Alternative ways to access hidden settings
If the standard methods do not work, you can try alternative options:
1. via ADB (for smartphones)
Connect your phone to your PC, turn on USB Debugging and execute the command:
adb shell am start -n com.android.settings/.DevelopmentSettingsThis will open the developer menu where you can activate additional options.
2. With the help of applications
For TVs, you can do this.
- 📱 Mi Home – sometimes allows you to access service functions through the Smart Home section»;
- 🔧 TV Assistant (only for Mi) TV) — A diagnostic tool from Xiaomi.
3. Through button combinations (for TVs)
On some Redmi TV models, the service menu opens by holding buttons on the remote:
Menu + Volume Down (hold 10 seconds)⚠️ Note: Applications from third-party sources (e.g, MTK Engineering Mode for Mediatek may contain malicious code. Download the software only from official resources (APKMirror, Xiaomi Community).