Developer mode on Xiaomi Mi A3: how to turn it on and why it is necessary

Xiaomi Mi A3 is one of the few smartphones of the brand that runs on a “pure” Android One instead of the proprietary shell MIUI. This means that the process of enabling the developer’s settings here is different from standard Xiaomi devices. In this guide, we will discuss how to activate hidden mode, what opportunities it opens up, and what you should pay attention to owners of the Mi A3, taking into account the features of its firmware.

Developer mode is designed for power users, testers and enthusiasts, but even the average owner can use it. For example, to speed up interface animation, debugging over USB, enable OEM Unlock (if you plan to unlock the bootloader), or reset the cache of applications without losing data. However, not all features are equally useful — some settings can lead to unstable smartphone operation or deterioration of autonomy if changed at random.

It's important to understand that the Mi A3 on Android One has limitations compared to MIUI. For example, there are no Xiaomi branded tools for fine-tuning gestures or battery, but there are native Android options available that are not in customized firmware. Next, a step-by-step instruction with nuances for this model.

Why is there no standard way to develop a developer mode on Xiaomi Mi A3?

Owners of other Xiaomi smartphones are used to having the developer's settings enabled through the About Phone → MIUI version. But the Mi A3 runs on Android One, Google's program that involves minimal changes to the system.

• 🔹 No branded launcher. MIUI and the associated hidden menus.
• 🔹 The firmware version is designated as Android 10/11, not MIUI 12/13.
• 🔹 Some options (such as Fastboot or Fastboot) EDL Mode) may require other commands to enter.

Because of this, many of the instructions for Xiaomi don't work, like trying to tap the MIUI version won't get you anywhere -- it just doesn't exist. Instead, you'll need to look for the build number in the standard Android settings.

By the way, the Mi A3 isn’t Xiaomi’s only Android One smartphone, a similar approach works for the Mi A1, Mi A2 and Mi A2 Lite, but each model can have its own nuances with Android versions and options available.

Step-by-step: how to enable the developer parameters

The activation process takes less than a minute, but requires precision.

1. Open "Settings" (the gear icon in the application menu).
2. Scroll down and select System.
3. Tap on the phone (or phone information).
4. Find the line Assembly number (usually at the bottom).
5. Press it 7 times in a row, and after each tap, a notification will appear about the number of remaining clicks (for example, "4 steps left").
6. On the 7th press, you will see a message: “You became a developer!”

Now, the Settings menu will have a new section for developers (usually above or below System) if it's not available, check if it's hidden in the Additional submenu.

Battery charge over 30% |Stable Wi-Fi connection (if you plan to upgrade) |No important tasks (some settings require rebooting) |Supported data backup (in case of reset)

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⚠️ Note: Some of the Mi's firmware A3 After the Android update, the developer section can be "reset." If it disappears, repeat the procedure by clicking on the build number.

Where to find the developer’s settings after switching on?

Once activated, the new section isn't always obvious. It's located on the Android version:

If you can't find a section, try searching by settings (the magnifying glass icon in the upper right corner). Type "developer" and the system will show you a direct path.

On the Mi A3 with Android 11, the developer menu can be hidden behind an additional swipe up in the System section, and check if the mode is disabled in the security settings (rarely, but it happens after a reset).

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If some options are inactive (grey) after the developer mode is turned on, it means they are blocked by the manufacturer. For example, OEM Unlock may not be available if the smartphone is tied to the carrier.

Top.-5 useful functions for the ordinary user

Not all options on the developer menu are for programmers, but here's what the average Mi A3 owner might need:

• ⚡ Accelerate animation: Switch the Windows Animation Scale, the Transition Animation Scale, and the Animator Duration Scale to 0.5x Or it's off. It'll make the interface noticeably faster.
• 🔋 Background Processes: Limit the number of background applications to Limit Processes 2-3. This will extend the battery life.
• 📱 Debugging by USB: Necessary to connect to the PC via ADB (For example, to transfer files or unlock the bootloader).
• 🎯 Strict mode: Includes flashing frame when used GPS It's useful for controlling access to applications.
• 🔄 Do not turn off the screen: Do not turn off the screen is useful if you need to keep the display active for a long time (for example, when viewing recipes).

Be careful with the settings associated with GPU-acceleration 4x MSAA. Changing them can lead to graphic artifacts in games or even overheating of the processor. A3 With its modest Snapdragon 665 chipset, this is especially true.

⚠️ Attention: Unlock option OEM on Mi A3 It may disappear after resetting or updating. If you plan to unlock the bootloader, turn it on before any firmware manipulations.

What to do if the developer’s parameters are missing?

Sometimes, after you update your system or reset your settings, the Developer section disappears, and here are the possible reasons and solutions:

• 🔄 Reset: After the hard reset, all hidden menus are turned off. You need to tap the Assembly Number 7 times again.
• 📱 Android Update: Large updates (like version 10 to version 11) can reset settings. Check the path to the menu - it could have changed.
• 🔒 Security Policy: On some firmware (especially corporate) access to the developer mode is blocked by the device administrator.
• 🐞 System glitch: Rarely, but it happens that partition disappears due to a failure. Helps reboot or clean the cache of the application Settings.

If nothing helps, try this trick:

1. Open Settings → Applications → All applications.
2. Find the settings (cog icon) and tap it.
3. Select Warehouse. → Clear the cache.
4. Reboot your smartphone and repeat the procedure with 7 taps on the Assembly Number.

On the Mi A3 with Android 11, sometimes rolling back to factory settings through Recovery helps, but this is an extreme measure - don't forget about the backup!

Dangerous settings: what not to touch on Xiaomi Mi A3

Not all options on the developer menu are harmless.

• 🚨 Disruption of sensors: For example, disabling the proximity data will cause the screen to not go out during the call.
• 🔋 Reduce battery life: Activate Do not turn off the screen or background location check will quickly drain the battery.
• 📵 Break the connection to networks: Changing the settings of mobile data or Wi-Fi can lead to loss of communication.
• 🛠️ Disable the system: Wrong values in scale LCD or GPU-renderer causes graphical glitches.

It is especially dangerous to change:

• Turning off the absolute volume level can cause distortion of the sound.
• Background verification process – increases the load on the processor.
• Selecting USB mode – the wrong choice (e.g. MIDI) will make file transfer impossible.

On the Mi A3 with its Snapdragon 665 and 4 GB of RAM, experiments with the background limit can lead to spontaneous reboots. If you notice that the smartphone has become "brake" or overheating - return all settings to the default state.

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The Xiaomi Mi A3 with Android One doesn’t have protection against accidental change of critical settings (unlike MIUI, where some options are blocked).This means you can easily break the system, so double-check what you change.

How to turn off the developer mode if it is no longer needed

If you've accidentally turned on the developer's settings, or they're no longer required, you can deactivate them.

Method 1. Through settings:

1. Go to Settings → System → For developers.
2. In the upper right corner, find the switch (usually gray).
3. Turn it off, the section will disappear from the menu.

Method 2. Through discharge:

1. Open Settings → System → Resetting settings.
2. Select Reset App Settings (not a full reset!).
3. Confirm the action – this will remove all user settings, including the developer mode.

On the Mi A3, after deactivating the developer mode, some functions (such as USB Debugging) may remain active until the reboot. If you want to completely clean the system, reboot.

Note that if you have previously allowed OEM Unlock, it will remain in status even after deactivating Developer Mode. That's fine, because it's tied to the hardware of your smartphone.

FAQ: Frequent questions about the developer mode on Xiaomi Mi A3