Many owners of budget smartphones are faced with an incomprehensible situation: the device works properly, but the function Android Auto is not detected in the system. This question arises especially often among users of the line Redmiwhere the software shell MIUI has its own configuration features. If you are looking for an Android car on Redmi 9, then most likely you have already rummaged through the entire settings menu, but have not found the treasured item.
The problem is not the lack of support from the hardware, but the software restrictions that the manufacturer imposes on certain sales regions. The smartphone Xiaomi Redmi 9 is technically fully capable of supporting synchronization with car multimedia systems, however, by default this option may be hidden or deactivated. Understanding the architecture MIUI will help you independently unlock the necessary functionality without obtaining superuser rights.
In this article we will analyze in detail the algorithm of actions that will allow you to activate the hidden capabilities of your gadget. We will look at the nuances of working with developer mode, features of connecting via USB, and possible causes of failures. Follow the instructions carefully to turn your smartphone into a full-fledged on-board computer.
Why a function may not be in the menu
The first thing the owner needs to understand Redmi 9: the absence of a shortcut or item in the settings does not mean a breakdown. The company Xiaomi often divides firmware into global (Global) and regional (for example, for China, India or Russia). In some assemblies Android Auto is disabled at the system registry level to reduce the load on low-end processors or due to licensing agreements with automakers in a particular region.
In addition, the operating system itself Android requires certain certificates to work with car head units. If your phone was purchased in a “grey” way or flashed with unofficial software, a system integrity check may block the service from starting. It is also worth considering that the function requires an operating system version of at least Android 6.0, which is the default for Redmi 9, but the shell version MIUI plays a critical role.
⚠️ Attention: Before making changes to the system settings, make sure that the battery level is at least 50%. Interrupting the setup process due to a discharge can lead to a malfunction of the communication modules.
Sometimes the problem lies in outdated software. Developers regularly release patches that add support for new communication protocols. If you haven’t updated your Redmi 9for a long time, the system may simply “not know” about the existence of modern standards for connecting to a car. Checking for updates is the first and safest step before using complex activation methods.
Checking basic requirements and updates
Before moving on to complex manipulations with the developer menu, it is necessary to exclude elementary causes of inoperability. Make sure your device has all the latest security and system updates. Go to the Settings → About phone → MIUI version section and click the check button. The presence of fresh software guarantees compatibility with the latest versions of applications Google Play Services.
The presence of an installed application is also critically important. Android Auto. On modern versions it is often built into the system, but on Redmi 9 with a shell it may not be included in the basic configuration. You need to go to the store Android it is often built into the system, but on Redmi 9 with a shell MIUI 12 or MIUI 13 it may not be included in the basic configuration. You need to go to the store Google Play and manually download the application. Without this component, the phone will not be able to initiate a communication session with the car, even if all settings are correct.
- 📱 Make sure that the USB cable is working and supports data transfer, and not just charging.
- 🔌 Check the car port: some older radios require connection to a specific USB input with a smartphone icon.
- 🌐 Activate mobile data or Wi-Fi on your phone for initial setup and downloading maps.
After installing the application, restart your device. This action will clear the cache of system processes and force services Google to rescan the installed software. Often, after a simple reboot, the icon Android Auto appears in the settings menu automatically if the system has determined compatibility without additional intervention.
Use the original cable included with the Redmi 9. Cheap third-party cables often do not have data lines, which is why the computer or car sees the phone only as a power source.
Activation through developer mode
If standard methods do not help, you will have to use the hidden engineer menu. This is the main way where Android Auto on Redmi 9 can be forcibly turned on. You need to activate developer mode. To do this, go to Settings → About phone and quickly click on the item MIUI version about 7-10 times until the notification “You have become a developer” appears.
After activation, a new section will appear in the main settings menu Advanced → For Developers. This is where the key switches are hidden. You need to find the item related to debugging or USB standards. In different versions MIUI it may be called differently, but most often it is the default USB configuration setting. Change the value from “Charge Only” to “File Transfer” or “Android Auto”.
⚠️ Attention: In developer mode, do not change settings whose meaning you do not know. This may lead to unstable operation of the sensor, sound or network.
Pay special attention to the “USB Debugging” item. Although Android Auto it is not always required for operation, turning it on allows the system to correctly process commands from the vehicle's head unit. Turn on this switch and confirm permission to debug from this computer (in this case, the role of the computer is played by the multimedia system of the car).
☑️ Activating hidden functions
Setting up the connection to the car
The pairing process requires compliance with a strict sequence of actions. First, connect the cable to your smartphone, and only then insert the other end into the car port. The screen Redmi 9 should respond with a request to allow access to data. Click “Allow” and if the “Always allow from this device” checkbox appears, check it so as not to confirm the action every time.
The interface should start on the radio screen Android Auto. If this does not happen, check the projection settings on the vehicle itself. Some systems require manual source selection. Make sure your phone's screen is unlocked when connecting, as some older protocols may not initiate a connection with a sleeping device.
| Connection phase | Action on smartphone | Action in car |
|---|---|---|
| Physical connection | Connect the USB cable | Insert the plug into the port with the phone icon |
| Authorization | Click “Allow” in the pop-up window | Accept the pairing request on the screen radio |
| Launch interface | Unlock phone screen | Select Android Auto source in the media menu |
| Sound settings | Check sound output via Bluetooth or cable | Make sure that the navigation sound does not drown out the music |
If the connection is successful, you will see an adapted interface with large buttons on the car screen. Now you can control navigation, calls and music without taking your eyes off the road. The system will automatically launch the necessary applications the next time you connect, unless you change the settings in the menu Android Auto on the phone.
What to do if the phone is charging, but does not connect?
If the phone is only charging, then there is no contact on the data lines. Try a different cable, clean the phone port from dust with compressed air, or check the USB settings in developer mode by switching the mode from MTP to PTP and back.
Solving wireless connection problems
Owners Redmi 9 are often interested in the possibility of a wireless connection. However, there is an important technical nuance here: the processor Helio G80 and the Wi-Fi module in this model may not support the Wi-Fi Direct standard in the mode required for stable operation Wireless Android Auto. The wireless function is officially available only on phones with Android 11 and higher if there is a corresponding 5 GHz module.
However, if your car radio supports a wireless protocol, you can try to set up the connection manually. To do this, in the menu Android Auto on your phone, enable the option “Run Android Auto automatically”. Then, in the car's Bluetooth settings, search for devices and pair them with Redmi 9.
After pairing via Bluetooth, the phone will prompt you to configure the screen projection. This method is often unstable and may cause delays in navigation response. For budget smartphones, using a cable remains the most reliable option, ensuring minimal ping and no connection dropouts while moving.
⚠️ Attention: Wireless connections consume battery power much faster and can cause the smartphone case to heat up. For long trips, it is recommended to use a cable.
Frequent errors and how to fix them
Even with proper configuration, users may encounter periodic failures. One of the common problems is a black screen on the radio when the sound is on. This indicates a screen resolution or refresh rate conflict. Try turning off adaptive brightness on your phone and setting it to a fixed value, as the light sensor in your car may not work correctly.
Another common mistake is turning off navigation all the time. This is due to aggressive energy saving in the shell MIUI. The system can “kill” the process Google Maps in the background. To avoid this, go to Settings → Applications → Manage applications, find Google Maps and Android Auto, select "Energy Saving" and set the value to "Unlimited."
- 🔄 Clear the cache of the Google Play Services and Android Auto applications through the app settings menu.
- 🚫 Disable power saving for all components of the Google system.
- 🔍 Check to see if Do Not Disturb mode is enabled, which can block sound notifications from the navigator.
If all else fails, resetting the settings is a last resort networks. This will remove saved Wi-Fi hotspots and Bluetooth pairs, but often resolves problems with handshake protocols between the phone and the car. After the reset, you will have to pair all devices again, but stability Android Auto is usually restored.
The stability of Android Auto on Redmi 9 depends 90% on the quality of the USB cable and the correct power saving settings for Google applications.
Additional features and settings
After successful activation, you will have access to a wide range of functions. You can set up Google Assistant to control your music and calls without touching the screen. Interface customization is also available: changing the theme (light or dark), customizing the display of maps and selecting priority applications for the car’s main screen.
It is important to note that the functionality may differ depending on the car’s firmware version. Some older head units do not support video display or complex messenger interfaces. In this case, Redmi 9 will work in basic mode, providing only navigation and telephone functions.
Regularly check for application updates Android Auto in the Play Market. Developers are constantly improving compatibility with various car models and correcting errors associated with specific versions Android. Community support and Xiaomi user forums can also offer unique scripts or modifications to expand the capabilities of your device.
Why doesn’t Android Auto see my Redmi 9 through the cable?
Most likely, a cable that supports charging only is used. Replace it with a quality data wire. Also check if USB debugging is enabled and file transfer mode is selected in the developer settings.
Is it possible to use wireless Android Auto on Redmi 9?
Officially, this model does not support the wireless protocol due to limitations of the Wi-Fi module. Connection is only possible via a USB cable. Third-party emulator applications may be unstable.
How to disable automatic launch of Android Auto?
Go to the settings of the Android Auto application on your phone, select the “Launch” section and disable the “Start automatically” option. You can also revoke permissions for the car's head unit in the Bluetooth menu.
Does the MIUI version affect the operation of the function?
Yes, some older versions of MIUI had bugs with Google services. Updating to the latest available firmware version often solves problems with connection detection and stability.