How to turn it on AAS Xiaomi devices: from theory to practice

Adaptive synchronization technology (AAS, Adaptive Sync by Xiaomi has become a real breakthrough for gamers and fans of dynamic content. It allows you to synchronize the refresh rate of the screen with the frame rate of the video stream, eliminating image tears and stuttering. But many users have difficulty trying to activate this feature — the button is inactive, the option is not on the menu at all. AAS On Xiaomi TVs and smartphones, and explain why the feature may not work on your device.

It is important to understand that AAS — It's not just turned on and forgot. It's very much about the hardware of the display, the firmware version, and even the type of content you connect. TV Q2 2023 Adaptive Synchronization will work with the HDMI 2.1 sources, but not virtually all apps.+ AAS It's only activated in high-frequency games, and we've gathered up-to-date information on all product lines, from budget models to flagships.

What is it? AAS Why you need it on Xiaomi?

Adaptive synchronization (AAS) — It is a technology that dynamically adjusts the screen refresh rate (Hz) to the current frame rate (FPS) Unlike standard VSync, which rigidly binds frames to a fixed display frequency, AAS It works smoothly, eliminating:

• 🎮 Tearing – image breaks when the screen shows parts of two different frames at the same time (typical for floating games) FPS).
• 📺 Stuttering – Twitching video when a mismatch occurs FPS content and Hz screen (e.g., 24 movie) FPS 60Hz display).
• 🕹️ Input Lag – Delayed entry in games caused by frame buffering.

On Xiaomi devices AAS implemented differently:

• 📺 Televisions (Mi series) TV Q, P, A Pro - support HDMI 2.1 and ALLM (Auto Low Latency Mode for consoles and PC.
• 📱 Smartphones (Redmi) K60, POCO F5, Xiaomi 13T) — adaptive refresh rate from 48 Hz to 144 Hz in games and applications.
• 🖥️ Xiaomi Mi Surface Display – FreeSync Premium Certified Support.

However, not all devices support AAS"For example, on the Redmi Note 11, the function may be missing due to processor limitations, and on the Mi, the function may not be available. TV 4S — because of the old HDMI Before setting up, check the compatibility of your model in the official documentation or through the Mi Support service.

Official method of inclusion AAS on Xiaomi TVs

On Xiaomi TVs (Q, P, A Pro series from 2021), adaptive synchronization is enabled through the game settings menu.

1. Connect the signal source (game console, PC) to the port HDMI 2.1 (usually marked eARC/HDMI 3).
2. Go to Settings. → The device → HDMI-entrance → Game mode.
3. Activate options: 🔄 Adaptive synchronization (AAS) — main-switch. 🎯 ALLM (Auto Low Latency Mode – for automatic switching to game mode. 🖥️ Permission 4K@120Hz (if supported by a source).

Settings → Screen → Additional

Extended regime

If Adaptive Synchronization is inactive or not available, check:

• ⚡ Firmware version (update through Settings) → On TV. → Update of the PO).
• 🔌 Type of cable - you need HDMI 2.1 (ordinary) HDMI 2.0 does not support AAS).
• 🎮 Source settings - on PlayStation 5 turn on 120 Hz output in screen settings, on PC — FreeSync/G-Sync videocard control panel.

Enabling adaptive frequency on Xiaomi smartphones

On smartphones Xiaomi, Redmi and POCO The Adaptive Refresh Rate works differently than on TVs. AAS automatically adjusts the Hz display to the tasks:

• 📱 1Hz - Always on screen (AOD).
• 📄 60 Hz - reading, instant messengers.
• 🎮 90/120/144 Hz - games, scrolling tape.

To enable or adjust the adaptive frequency:

1. Open the Settings → Display.
2. Select the screen refresh rate.
3. Activate the Adaptive option (or Auto on some models).
4. For games: go to Settings → Special facilities → Game settings and enable Improved refresh rate.

On some devices (for example, Xiaomi 13 Ultra) is available advanced settings AAS via hidden menu:

Enter the phone code in the app: ##4636##


Go to "Equipment Testing" → "Display"




Select the Adaptive Refresh Rate and set the desired thresholds.

💡

If you notice a flickering screen after you turn on the adaptive frequency, try calibrating the light sensor. → Display. → Brightness → Automatic adjustment and reset sensor settings.

Compatibility of Xiaomi devices with AAS: full-sheet

Not all Xiaomi devices support adaptive synchronization. Below is the current compatibility table as of 2026.Please note, even if your model is on the list, it's up to you to work. AAS You may need to update the firmware.

If your model is not in the table, it does not mean that AAS For example, some devices get adaptive synchronization support after major updates. MIUI. To check the current status:

1. Go to the Mi Support website.
2. Enter the device model in the search bar.
3. Check the Technical Specifications section → Display.

💡

AAS On smartphones Xiaomi works only with displays based on technology LTPO or LTPO 2.0. Devices with conventional AMOLED/OLED-screens (e.g. Redmi Note) 11) They do not support smooth frequency control.

Frequent problems and their solutions

Even if your device is officially supported AAS, You may have difficulty activating. Here are the most common problems and ways to solve them:

⚠️ Attention: If, after activation, AAS On a Xiaomi TV, the image begins to flicker or artifacts appear, which may indicate a cable incompatibility. HDMI 2.1 with a capacity of at least 48 Gbps.

Problem 1: Option AAS inactive on the TV menu.

• 🔌 Check the connection port — AAS It works only through HDMI 2.1 (usually port) №3).
• 📋 Update the TV firmware to the latest version (minimum required version for the TV) AAS — MIUI TV 3.0+).
• 🎮 Make sure the source (console/PC) supports the VRR and turned it on in the settings.

Problem 2: On a smartphone AAS It is not working smoothly (Hz jumps).

• 🔄 Restart the device – sometimes sensor failure causes the adaptive frequency to malfunction.
• 📱 Turn off battery optimization for games in Settings → Annexes → Battery management.
• 🛠️ Reset the display settings to factory (Settings) → Display. → Resetting settings).

Problem 3: AAS It is included but does not work in games.

• 🎮 Check if the game supports high frame rate (e.g. Genshin Impact or Call of Duty Mobile should be set to 60 frame rate).+ FPS).
• 🔧 Enable Force option in the developer settings GPU Rendering (Settings) → The phone. → Version. MIUI — tap 7 times).
• 📥 Update GPU drivers through Settings → My device. → Package updates MIUI.

If none of these things worked, maybe your device has hardware limitations. 10 Adaptive frequency is not supported due to the use of a fixed display 60/90 Hz.

Alternative activation methods AAS (for advanced users)

If the standard methods do not work, you can try to include AAS through hidden settings or ADB-These methods require caution and are only suitable for experienced users.

Method 1: Enabled through the Engineering Menu (for TVs)

1. Open the Mi Remote app on your smartphone.
2. Connect to the TV and go to the advanced settings.
3. Enter the code: 114514 (engineering menu will open).
4. Find the section VRR Settings and activate Force Adaptive Sync.

Method 2: ADB-smartphone-team

This will require:

• 🖥️ Computer with installed ADB Tools.
• 📱 Included debugging by USB on a smartphone (Settings) → The phone. → Version. MIUI — Tap 7 times, then Settings → Additionally. → For developers → Debugging by USB).

adb shell settings put global adaptive_refresh_rate_enabled 1


adb shell settings put global peak_refresh_rate 120

After completing the commands, restart the device.

⚠️ Attention: Misuse of the right ADB-commands can cause system failures. Before experimenting, back up your data through Settings → Additionally. → Backup and reset.

Method 3: Castom firmware (for enthusiasts)

Some custom firmware (like LineageOS or Pixel Experience) add support AAS on devices where it is not in the stock MIUI. However, this method:

• 🚫 Deprives you of security.
• 🔧 Requires to unlock the bootloader (fastboot oem unlock).
• ⚠️ It can lead to unstable operation of the device.

Comparison AAS with other synchronization technologies

AAS Xiaomi is often compared to FreeSync (AMD), G-Sync (NVIDIA) and HDMI VRR. The principles of work are similar, there are key differences:

Main advantage AAS Xiaomi is cross-platform, unlike G-Sync, which is ecosystem-bound. NVIDIA, FreeSync, requiring certification, adaptive synchronization on Xiaomi devices works with:

• 🎮 Consoles (PS5, Xbox Series X).
• 🖥️ Video cards (AMD, NVIDIA, Intel Arc).
• 📱 Mobile devices (via DisplayPort Alt Mode).

However, there are also disadvantages:

• 📉 On budget models, range AAS limited (48–60 Hz).
• 🔌 Not all apps support variable frame rate.
• 📶 Increase energy consumption by 10-15%.

FAQ: Answers to Frequent Questions