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MIUI Hidden Settings: Real Options & How to Access Them

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MIUI, Xiaomi’s Android skin, includes several hidden settings and developer options that aren’t visible in the main Settings app. This article explains how to access the most useful hidden menus, what each one does, and which ones are safe to change.

What Are Hidden Settings in MIUI?

Hidden settings are system options that Xiaomi does not display by default. They are usually accessed by tapping the MIUI version number repeatedly or by entering special codes in the dialer. Some are developer tools, while others are diagnostic menus or features that are still in testing. The most common hidden menus include:

  • Developer options – enables USB debugging, animation scaling, and performance tweaks.
  • Hardware testing menu – runs diagnostics on the screen, sensors, camera, and speakers.
  • Notification log – shows a list of recent notifications, including ones that were dismissed.
  • RAM info – displays current memory usage and the amount of RAM used by each app.
  • Backup and reset – some older MIUI versions hide the local backup option.

How to Enable Developer Options

The most common hidden setting is Developer Options. To enable it:

  1. Open Settings.
  2. Tap About phone (or My device on some versions).
  3. Tap MIUI version repeatedly (about 7 times) until a message appears saying you are now a developer.
  4. Go back to Settings and scroll down to Additional settings.
  5. Tap Developer options.

If you don’t see Developer options, make sure you have a valid SIM card inserted and that you are connected to the internet. Some MIUI versions require this before the option appears.

Hidden Testing Menu

MIUI includes a hardware testing menu that you can open by dialing *#*#6484#*#* or *#*#4636#*#* (the exact code varies by model and region). This menu lets you test individual components:

  • Screen color and touch response
  • Front and rear cameras
  • Speaker, microphone, and vibration
  • Proximity and ambient light sensors
  • Battery health and charging status

This is useful for diagnosing hardware issues before contacting support. The menu is read-only for most tests; it doesn’t change any system settings.

Useful Hidden Features in Developer Options

Once Developer Options are enabled, you can access several settings that are not in the standard menu. The most useful ones are:

  • USB debugging – required for connecting to a computer for file transfer or ADB commands.
  • Animations – set window, transition, and animator scales to 0.5x or off to make the interface feel faster.
  • Force dark mode – enables dark mode for all apps, even those that don’t support it natively.
  • Show CPU usage – overlays a real-time CPU load indicator on the screen.
  • Background process limit – restricts how many apps can run in the background, saving RAM.

Most of these are safe to experiment with, but changing settings like Force GPU rendering or Disable HW overlays can cause screen artifacts or battery drain. If something goes wrong, you can reset all developer options by tapping the three-dot menu and selecting Reset to defaults.

Hidden Notification Log

MIUI hides a notification log that shows all notifications that appeared on your device, including ones you accidentally dismissed. To access it:

  1. Add a Settings shortcut to your home screen (long-press the home screen, select Widgets, then Settings).
  2. Open the Settings shortcut and scroll down to Notification log.
  3. Tap it to see a list of notifications with timestamps.

This is helpful if you missed a message or want to see what an app notified you about earlier. The log only stores notifications from the current boot session; it clears when you restart the phone.

Hidden RAM and Storage Info

MIUI also hides a detailed RAM usage screen. You can access it by going to Developer options → Running services. This shows each app’s memory usage in real time, which can help you identify apps that are consuming too much RAM. For storage, the standard Settings → Storage shows a general breakdown, but a more detailed view is available in Settings → Additional settings → Storage on some MIUI versions.

Common Problems and Misconceptions

One common misconception is that hidden settings are dangerous or can brick your phone. In reality, most hidden menus are diagnostic or developer tools that are safe to view. The only risky ones are those that modify system files or boot settings, which are usually not accessible without root access. Another issue is that some hidden codes (like *#06# for IMEI) work universally, while others are Xiaomi-specific and may not work on all models. If a code doesn’t work, it’s likely not supported on your device or region.

Frequently Asked Questions

Is enabling Developer Options safe?

Yes, simply enabling Developer Options is safe. It just reveals a new settings menu. The danger comes from changing certain options without understanding them. If you stick to USB debugging, animation scales, and background process limits, you won’t harm your phone.

How do I hide Developer Options again?

You can’t completely hide the Developer Options menu once it’s enabled, but you can turn off the toggle at the top of the Developer Options page. This disables all developer settings without erasing them. The menu will remain visible in Settings, but the options will be inactive.

What does *#*#6484#*#* do?

This code opens the hardware testing menu on many Xiaomi devices. It lets you run diagnostics on your screen, camera, sensors, and other components. It’s a read-only tool and doesn’t change any settings.

Why can’t I find the notification log?

The notification log is hidden in the Settings widget. You need to add the Settings widget to your home screen, then open it and scroll down to find Notification log. If it’s not there, your MIUI version may have removed it, or you may need to enable Developer Options first.

Will changing animation scales speed up my phone?

Setting animation scales to 0.5x or off makes the interface feel faster because transitions are shorter or skipped entirely. It doesn’t increase processing power, but it reduces the perceived lag, especially on older devices.

Are there hidden settings for battery life?

Yes, some MIUI versions have a hidden battery saver mode in Developer Options called Force allow apps to enter deep sleep. This can improve battery life, but it may also cause apps to stop sending notifications. Use it selectively.

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