Why Amazfit watches are disconnected from Xiaomi phone: a full analysis of the problem

You just bought an Amazfit smartwatch, plugged it into a Xiaomi smartphone, and 5 minutes later, the connection goes missing, or the connection breaks during training, notifications don't sync, and the Zepp app (formerly Mi Fit) has a "Device is off" error all the time.

The problem of disconnecting Amazfit from Xiaomi phones is one of the most common among users of the Xiaomi ecosystem, and up to 30% of calls on wearable devices are due to unstable Bluetooth connections, according to service centers, and it is not just the watch that is to blame: Often the root of evil lies in the firmware. MIUI, In this article, we will look at all possible causes, from the trivial to the technically complex, and give step-by-step instructions for eliminating them. Without the general phrases and "try to restart the device" (although this sometimes works).

1. Firmware conflict MIUI and firmware Amazfit watches

The most insidious reason is the incompatibility of software versions. MIUI, a Amazfit, especially models GTR 4, GTS 4, Bip 5) We get branded updates less often, and as a result, new energy-saving features in the MIUI 14/15 They can block Bluetooth background activity, and the old watch simply can not properly “negotiate” with the phone.

How it manifests itself:

• 🔄 The clock is connected, but after 1-2 minutes the connection is cut off.
• 📱 Xiaomi’s notification curtains with a message saying “Bluetooth connection is unstable".
• ⚡ The Zepp app shows the Error 1006 error (protocol incompatibility code).

The decision depends on what firmware you use:

⚠️ Note: If your Xiaomi is working on MIUI Global, and watches - on Chinese firmware (for example, Amazfit) GTR 4 CN), The connection will break every 10-15 minutes due to differences in Bluetooth regional settings.

2. Aggressive battery optimization in MIUI

Xiaomi is famous for its energy-saving system - but sometimes it works too well. MIUI restricts background activity of applications, including Zepp and Bluetooth system services:

• 🔋 The clock is turned off when the phone screen is locked.
• ⏳ Synchronization of data (steps, pulse) occurs only when you manually open the application.
• 🚫 Notifications are delayed or not coming at all.

How to check if optimization is to blame:

1. Open Settings → Applications → Application Management.
2. Find Zepp (or Mi Fit if you use the older version).
3. Check Auto Start, Background Activity and Battery Limitation.

If one of the points is off, that's the reason the connection breaks.

Enable auto-start application|Allow background activity|Disable battery restriction|Add Zepp to "Secure Apps" (in battery settings)-->

For Xiaomi models on Android 12+ (For example, the Redmi Note 12 Pro+, Xiaomi 13 needs additional support:

1. Go to Settings → Battery and productivity → Performance mode.
2. Choose High Performance (instead of "Balanced" or "Charge Saving").
3. Enable Adaptive Battery Optimization and add Zepp to the exceptions.

⚠️ Attention: On some firmware MIUI (for example, MIUI 14.0.4 for Poco F5) Even after optimizing, Bluetooth can shut down after 30 minutes, and then only a rollback to an older version will help. MIUI or custom firmware installation (for example, Xiaomi.EU).

3. Problems with the phone's Bluetooth module

If the Amazfit watch is only disconnected from your Xiaomi, and with other phones (for example, Samsung or iPhone) work stably, the Bluetooth module of the smartphone is to blame.

• 📡 Hardware failure (less often, but occurs after falls or moisture hits).
• 🔄 Programmatic conflict (for example, after updating) MIUI Installation of third-party applications such as Bluetooth Auto Connect).
• 📶 Channel overload (too many connected devices: headphones, column, fitness bracelet).

Diagnosis:

1. Try connecting other Bluetooth devices (headphones, speakers) to your phone, and if they also turn off, it's a problem.
2. Run the test equipment with code ##4636## → Phone information → Bluetooth status. OFF Error - the module is defective.
3. Check the Bluetooth logs through ADB (For advanced users: adb logcat | grep -i Bluetooth: Search for lines with disconnected or link loss.

Decisions:

• 🔧 Resetting Bluetooth settings: Settings → Connected devices → Bluetooth settings → Reset.
• 📥 Driver Update: Install the latest version MIUI or run the Bluetooth module via Fastboot (instructions for power users).
• 🛠️ Repair: If a module is physically damaged (for example, after a fall), it will have to be replaced. The average cost of repair in a service center is 1,500-3,000 ₽.

💡

Before resetting Bluetooth, save a list of associated devices: open Settings → Connected devices and take screenshots. Once reset, you'll have to reconnect them.

Errors in the Zepp app (Mi Fit)

The Zepp app (formerly Mi Fit) is a weak spot in the Amazfit ecosystem, and it often gets glitchy, doesn't sync data, loses connection, or doesn't see the watch at all.

• 🔄 The watch is connected, but the app has the status "Offline".
• ⚠️ Sync failed or Device disconnected unexpectedly.
• 📵 Notifications arrive on the clock, but are not displayed in Zepp.

Reasons:

• 📦 Older version of the app (especially relevant for Zepp on Android 13)+).
• 🗃️ Damaged cache or application data.
• 🌍 Conflict with regional settings (for example, if the watch is purchased in China, and the app is a global version).

Step-by-step correction instructions:

1. Update Zepp: Remove the current version and install the latest with Google Play or AppGallery.
2. Clear the cache: Open the Settings → Annexes → Zepp, press the vault. → Clear the cache and clear the data. Reboot the phone.

5. Conflict with other Bluetooth devices

Xiaomi phones (especially Snapdragon models) 8 Gen 1/2) They have a limit on the number of Bluetooth devices connected at the same time:

• 🎧 Wireless headphones (Redmi Buds, Xiaomi AirDots),
• 🔊 The Portable Speaker (Mi Portable Speaker),
• 🚗 Bluetooth adapter in the car,

The Amazfit watch will automatically turn off to free up the channel for higher-priority devices (e.g., headphones during a call).

How it works:

• 📊 MIUI Ranking devices by priority: headphones > column > clockwork.
• ⏱️ If the channel is overloaded, the clock shuts down after 5-10 minutes without activity.
• 🔄 When you reconnect (for example, when you open Zepp), the watch is reconnected.

Decisions:

1. Turn off unnecessary devices: Forget headphones or speakers in Bluetooth settings if you don’t use them all the time.
2. Use the profile A2DP Sink: To do this: Connect the watch to your phone. Enable the developer mode (Settings) → The phone. → Version. MIUI — press 7 times. Go back to Settings. → Additionally. → For developers, find Bluetooth Audio Codec and select SBC (codec-stable).
3. Limit the number of connections: In the same developer settings, turn off AVRCP 1.6 (this will reduce the priority of multimedia devices).

6. Hardware malfunctions of the Amazfit watch

If you’ve tried all the software solutions and the Amazfit watch is still disconnected from Xiaomi, the reason could be a physical breakdown:

• 🔋 Worn-out battery: With a charge below 15%, the watch starts to save energy and shuts off Bluetooth.
• 📡 Damaged Bluetooth antenna: Often occurs after impacts or water hits (even if the watch is waterproof).
• 🛠️ Contact oxidation: If the watch lay unused for a long time, the contacts could oxidize.

How to diagnose:

• 🔋 Check the battery life: if the watch discharges in 1-2 days (at the declared 7-14), the battery is worn out.
• 📶 Try connecting the watch to another phone (not Xiaomi) and if the problem persists, it's the watch's fault.
• 💧 Check the case for corrosion (green plaque near the buttons or connectors).

Decisions:

• 🔧 Battery replacement: Cost from 800 ₽ (for the Amazfit Bip up to 2,500 ₽ (for GTR 4).
• 📡 Repair of Bluetooth module: The service center can solder the antenna (price - 1,500-3000) ₽).
• 🔄 Update the firmware through PC: Sometimes the firmware through the Amazfit Tool (instructions on AmazfitWatchFaces) helps).

⚠️ Warning: If your Amazfit watch is underwater, don’t dry it with a hair dryer or battery, it will speed up corrosion. Put it in a silica gel bag (out of a shoe box) for 24 hours, and then contact the service.

💡

If the clock is switched off only in the cold (below) +5°C, condensate problem inside the enclosure. This is a malfunction, not a feature.

7. Features of specific models Xiaomi and Amazfit

Some combinations of Xiaomi phones and Amazfit watches are more conflicting than others, and here are the most problematic pairs and solutions for them:

For owners of Xiaomi on Android 14 (for example, Xiaomi 14, Redmi) K70) There's an extra life hack:

1. Install Zepp not from Google Play, but from APKPure (version 6.1.0 or later).
2. In the developer settings, turn on Bluetooth Disable A2DP hardware offload.
3. Reboot your phone and reconnect the clock.

If your Xiaomi is running on a MediaTek processor (e.g. Redmi Note 12, Poco) X5), The problem with disabling Amazfit may be related to the mtk-bt driver. The only solution is to install a custom core (for example, Kirisakura) or roll back on the driver. MIUI 13.

FAQ: Frequent questions about disabling Xiaomi’s Amazfit