Xiaomi’s modern Redmi Note series smartphones have become universal remotes that can replace dozens of physical devices in your home. The built-in infrared transmitter on the top of the case allows you to instantly adjust household appliances without having to search for original remotes or buy additional accessories. This is especially true in hot weather, when you need to quickly change the temperature or mode of operation of the climate system while lying on the couch.
The process of integrating your Redmi Note with air conditioning takes only a few minutes and requires no special technical knowledge.The Mi Remote system (or "Mi Remote") is pre-installed on most of the brand's devices and contains an extensive code base for thousands of split system models from various manufacturers. You do not need to be an engineer to set up this feature, just follow the logical steps described in this guide.
In this article, we’ll take a look at all the nuances of connectivity, from initial setup of an app to advanced automation scenarios, how to solve typical device detection problems, what alternative applications to consider if the standard one doesn’t work, and how to turn your phone into a real smart home control center.
Checking the presence of an IR port and preparing the device
The first and most important step is to confirm that you have an infrared transmitter (IR Blaster) on your device. Not all Xiaomi models, even in the Redmi line, are equipped with this module, since in some budget or regional versions, manufacturers can exclude this feature to reduce the cost of design. Usually, the IR port hole is on the upper end of the smartphone, next to the noise-cancelling microphone or speaker, and looks like a small black spot.
If you're not sure about the specifications of your gadget, you can use a simple method of checking: run the "Mi Remote" app and try to point the phone to a working TV or air conditioner. If there is a reaction in the application or the phone vibrates when you press buttons in emulation mode, then the hardware part is present. The lack of reaction can indicate either a lack of port or a software failure of drivers.
- 📱 Visually inspect the upper face of the body for a black IR emitter.
- 🔍 Run the standard "Mi Remote" application to check the system response.
- 📶 Make sure your smartphone is at least 20% charged for stable module operation.
- 🧹 Wipe the top of the case from dust and dirt that can block the signal.
It's worth noting that the IR remote doesn't require an Internet connection after you set up the database, but the primary download of codes and app updates is a must-have. The infrared port is line-of-sight, so there should be no physical barriers between the phone and the air conditioner, which is a fundamental difference from the Wi-Fi control, which we'll talk about later.
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If you use a black-framed security glass, make sure it doesn’t block the IR port, otherwise the signal will be blocked and the remote will not work.
Set up the standard Mi Remote application
The main tool for managing climate technology on Xiaomi devices is the system application Mi Remote (in some regions called "Mi Remote"). It is already built into the shell of MIUI or HyperOS, so you do not need to download third-party software at the initial stage. The application interface is as simplified as possible and focused on quickly adding new devices through a clear setup wizard.
To get started, launch the app and click the add-on button, usually marked with a plus symbol. From the category list that opens, select Air Conditioner. Then the system will prompt you to choose your split system manufacturer from a wide list of brands, including LG, Samsung, Haier, Ballu and others. If your brand is not on the list, you can choose the search option or universal code.
⚠️ Note: During the pairing process, keep your phone at a distance. 5-10 See the air conditioner receiver and point the top end strictly at the device.
Once you select a brand, you'll see a test button on the screen, and you'll click on it and watch the air conditioner react. If the device sounds or changes the operating parameters, hit Yes. If there's no response, select No, and the system will suggest the next code, which can take several attempts, because the same model range can be supported by different codes.
☑️ Checklist of Mi Remote setup
When you find the code that works, the system will suggest you save the device. Give it a clear name, such as "Living Room Air Conditioning" or "Bedroom", so as not to be confused if you add control of other appliances in the future. After saving the main screen, the main buttons will appear: turn on, change temperature, modes (cooling, heating, ventilation) and direction of the blinds.
Alternative applications and universal remotes
In rare cases, Xiaomi’s standard app may not find the right code for older or rare air conditioners, or its interface may seem uncomfortable. In such situations, third-party solutions from the Google Play Store come to the rescue, which often have more recent codebases and advanced functionality. These applications use the same hardware IR port, but offer more flexible configuration of button layouts.
One of the most popular solutions is the ZaZa Remote app, which has a huge code base and the ability to manually select frequencies, which sometimes helps to “revive” a device that ignores the standard Xiaomi remote. TV Remote and Peel Smart Remote, which are geared towards TVs, often have excellent support for climate engineering.
| Annex | Type of connection | Advertising | Difficulty setting up |
|---|---|---|---|
| Mi Remote | Infrared (IR) | No. | Low. |
| ZaZa Remote | Infrared (IR) | There is. | Medium |
| Universal Remote | Infrared (IR) | There is. | Low. |
| Smart Life | Wi-Fi / Cloud | No. | Tall. |
Alternative software is especially important if you own an air conditioner that was released more than 10 years ago, which may not be included in the standard firmware Xiaomi. However, remember that third-party applications may require unnecessary permissions, so carefully read the terms of use before installing.
Why can third-party apps work better?
Control over Wi-Fi and Smart Home
Unlike infrared control, which requires direct vision, Wi-Fi control allows you to control the air conditioner from anywhere in the world where there is Internet. To do this, your air conditioner must support Wi-Fi function (often labeled as "Smart" or "IoT"), and the room must have the appropriate router installed.
To implement this scheme, you will need to download the application of the air conditioner manufacturer (for example, Haier Smart Home, LG ThinQ, Yandex or universal Tuya Smart). Once you register in the application and add the device to the home network, you will be able to control temperature, timers and operating modes. The advantage is the ability to create complex scenarios, for example, automatically turning on the air conditioner 30 minutes before you arrive home, determined by the geolocation of the phone.
Integration with the Mi Home ecosystem allows you to combine air conditioning with other Xiaomi devices. You can customize the scenario: "If the temperature sensor is above 26 ° C and I'm at home, turn on the air conditioner." This creates a truly smart environment where the equipment works in concert without your input.
- 🌐 Requires a stable connection to a Wi-Fi network (2.4 GHz).
- 📲 You need to install a separate application or integrate into Mi Home.
- 🌍 Allows you to control the climate remotely from another country.
- ⚡ It allows you to monitor electricity consumption in real time.
It’s important to understand the difference: an IR port emulates a conventional remote, and a Wi-Fi module gives access to the air conditioner’s “brains.” If your old air conditioner doesn’t have Wi-Fi, there are special IR hubs (such as from Xiaomi or Tuya) that connect to the router and broadcast commands from phone to air conditioner via IR signal, making the “stupid” technique smart.
Decision and typical errors
Despite the ease of setting, users can face a number of problems when the phone stops "seeing" the air conditioner or commands are executed with a delay. Most often the problem lies in a physical obstacle: a case with high sidebars can close the IR port, or you hold the phone at the wrong angle. The infrared signal has a narrow angle of scattering compared to radio waves.
Another common cause is a discharged battery: With low charge, Android can limit background processes and transmitter power to save energy, which leads to unstable remote operation, and it is also worth checking whether power saving mode is on, which can block the IR module.
⚠️ Warning: If the air conditioner has stopped responding after the system update MIUI, Try resetting the "Mi Remote" application settings or clearing its cache in the "Applications" section".
In some cases, rebooting the air conditioner itself helps by disconnecting it from the network for 1-2 minutes. Split electronics sometimes “hang” and stop taking new commands, requiring a soft reboot. If nothing helps, it is possible that the IR port on the smartphone is physically damaged, and then you will need a diagnosis in the service center.
Useful tips and extended functions
Using a smartphone as a remote opens up possibilities that are not available for conventional button devices. For example, you can back up the configurations of all the remotes in the cloud account Xiaomi. When you buy a new phone Redmi, you do not have to configure everything again, just log in to your account, and all the remotes will recover automatically.
And many apps also allow you to create macros, which are command sequences that run at a single click, and you can create a Night Mode button that simultaneously turns off the lights (if you have a smart lamp), closes the curtains (if you have a drive), and puts the air conditioner 23 degrees into silent mode, a level of comfort that takes interaction with the equipment to the next level.
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Regularly update the database of remotes in the Mi Remote application through settings to get support for new models of equipment and error correction.
Remember, a smartphone screen uses more power when used as a remote than a regular IR transmitter. However, the convenience of having all the controls in one device that is always at hand completely compensates for this minimal disadvantage.