Reconnecting Xiaomi Watch S1 To another phone: complete instructions with error solutions

Switching to a new smartphone or wanting to sync Xiaomi Watch S1 With another device, it often becomes a problem for users: the watch refuses to connect, loses training data, or the Mi Fitness app (now Zepp Life) does not recognize the gadget. In this article, we will analyze three official ways of reconnecting - with saving statistics and with a complete reset, as well as solve typical errors such as "cannot find the device" or "synchronization error".

Feature of the Watch S1 It's that they're tied to a Xiaomi account, not a specific phone, which makes it easier, but requires the right sequence of actions. If you simply disconnect the watch from your old smartphone and try to connect to a new one, you risk losing your activity history or locking your device due to an incorrect disconnection from Xiaomi servers.

Preparing for reconnection: what to do before changing the phone

Before we unplug the Xiaomi Watch S1 From an old smartphone, take a few critical steps to prevent data loss and make it easier to sync further.

First, update the firmware to the latest version through the Zepp Life app. Outdated software can conflict with the new phone, especially if it is a transition from Android to iOS (or vice versa). → The phone. → POS version.

Second, sync all the data to the Xiaomi cloud.

• 📱 Open Zepp Life on your old phone.
• 🔄 Click on the icon of the clock in the top menu → Synchronize data.
• ☁️ Make sure your account settings include Autosynchronization with the cloud.

⚠️ Note: If you use an iPhone, remove the Zepp Life app from the background before turning off the clock (swipe up in multitasking.

Finally, prepare a new phone:

• 📲 Install Zepp Life (for Android) or Mi Fitness (for iOS) from the official store.
• 🔑 Sign in to the same Xiaomi account as your old phone.
• 📶 Turn on Bluetooth and give the application all the necessary permissions (geolocation, notifications).

Method 1: Reconnect without reset (Save data)

This is a good method if you want to keep your entire workout history, your settings, your health data, and it only works if you:

• ✅ The watch was not reset to factory settings.
• ✅ You use the same Xiaomi account on your new phone.
• ✅ The old phone still has the Zepp Life app installed.

Instructions:

1. On an old phone, open Zepp Life, go to the watch profile, and click Delete Device (not to be confused with “Disable Bluetooth”).
2. Confirm Deletion – The watch should vibrate and show a communication break notification.
3. On the new phone, launch Zepp Life, log in to your account and wait for the offer to connect the device.
4. Choose the Xiaomi Watch S1 from the list and follow the instructions on the screen.

If the watch does not appear on the list of available devices:

• 🔄 Restart the clock (press the power button for 10 seconds).
• 📱 Restart Bluetooth on your phone.
• 🔧 In the settings of the clock, activate the pairing mode: Settings → Bluetooth → Add the device.

⚠️ Warning: If the watch stops responding to touch after removing the device from the app, do a hard reboot: press both buttons for 15 seconds. This will not cause a data reset, but will restore the screen to work.

Method 2: Completely reset the clock (if data is not important or errors occur)

If the reconnection without reset failed or you do not plan to save the activity history, perform a hard reset hours. S1 to factory settings and will allow you to connect them to a new phone from a clean slate".

Resetting instructions:

1. On the clock, go to Settings → System → Reset settings.
2. Select Delete all data and confirm the action (entry may be required) PIN-code).
3. After the reboot, the watch will show a welcome screen - now it's ready for a new connection.

Next:

• 📱 On your new phone, open Zepp Life and click Add Device.
• 🔍 Choose the Xiaomi Watch S1 list.
• 🔗 Confirm the pairing on the watch and phone.

If the hours are not determined after the reset:

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If the clock doesn’t turn on after reset, plug it into charging for 30 minutes – sometimes a discharged battery blocks the system from starting.

Method 3: Reconnect via Mi Account (for data recovery)

If you deleted the watch from the app but didn’t reset and the new phone doesn’t see the device, use the link via your Xiaomi account, a method that allows you to restore communication without losing data, even if the watch was previously disabled incorrectly.

Step-by-step:

1. Sign in to Zepp Life on your new phone with the same account as your old device.

If the watch does not appear in the account’s device list:

• 🔄 Try updating the page (pull the screen down).
• 📧 Check that you are logged in to the correct account (sometimes users confuse logins).
• 🔧 On the clock manually activate the search mode: Settings → Bluetooth → Visibility.

Solving Typical Reconnection Errors

Even if you follow the instructions correctly, users are faced with errors, and let's look at the most common ones and how to fix them.

Error: "Can't find the device"

Causes and solutions:

• 🔋 Low battery power – charge the watch up to 50% and try again.
• 📶 Bluetooth interference – disable other devices (earphones, speakers) within a 5-meter radius.
• 🔄 Firmware conflict – update the clock through Settings → Updating the system.

Error: “The device is already linked to another account”

This problem arises if:

• You are logged in to another Xiaomi account on your new phone.
• The watch was not properly removed from the old app.

Decision:

1. On your old phone, remove the watch from Zepp Life (if you still have access).
2. If you don’t have an old phone, do a hard reset (see Method 2).

Error: "Data synchronization is impossible"

This is most often related to:

• 🌐 Without internet – check the network connection on your phone.
• ☁️ Disabled sync with the cloud – enable it in the settings of your Xiaomi account.
• 🕒 Time Failure – Make sure the clock and phone have the current time set (enable date and time Auto-Update).

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If none of these methods worked, try connecting your watch to your phone through the Mi Home app (sometimes it recognizes Xiaomi devices better than Zepp Life).

How to Transfer Training and Health Data to a New Phone

If you successfully reconnected the clock but your activity history is not displayed, use these data recovery methods.

Method 1: Synchronization through the Xiaomi cloud

All training, sleep and heart rate data is stored in the cloud if Auto Sync is enabled to recover:

1. Open Zepp Life on your new phone.
2. Go to Profile. → Settings → Data import.
3. Choose Restore from the Cloud and confirm the action.

Method 2: Manual export/import (if the cloud is not working)

If your cloud sync is disabled, try:

• 📤 On your old phone, export data to the file: Zepp Life Settings → Export of data → Save it to the device.
• 📥 Transfer the file to a new phone (via cloud, email, or cable).
• 📥 In Zepp Life on the new phone import the file: Profile → Settings → Data import.

⚠️ Note: Exports/imports are only available for exercise and sleep data.Information on steps, calories and heart rate is only transferred through the cloud.

Method 3: Use of third-party applications

If the official methods didn’t work, use services like Google Fit or Apple Health.

1. On your old phone, connect Zepp Life to Google Fit (Profile) → Connected applications).
2. Wait for the data to synchronize.
3. On your new phone, log in to Google Fit and connect it to Zepp Life.

Features of reconnecting to the iPhone (if previously used Android)

Moving from Android to iPhone (or vice versa) requires additional action because of ecosystem differences.

Change of annex

On iOS, Mi Fitness is used instead of Zepp Life (although the interface is almost identical).

• 📱 Install Mi Fitness from the App Store.
• 🔑 Sign in to the same Xiaomi account.
• 🔄 If the clock is not determined, restart your iPhone and try again.

2. Limitations of iOS

On the iPhone, there are several key differences:

• 🚫 No support for notifications from third-party messengers (only calls and calls) SMS).
• 🔋 Background synchronization works worse – data is updated only when the application is open.
• 📶 Bluetooth LE can be turned off in the background – turn on the option to Allow Bluetooth in the background in iOS settings.

3. Data transfer from Android to iPhone

To avoid losing the story:

1. On an Android phone, export your data to Google Fit (see Method 3).
2. On your iPhone, install Google Fit and log in to the same account.
3. Connect Mi Fitness to Google Fit in the app settings.

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On the iPhone after connecting the watch, turn off the “Battery Saving” mode – it blocks background synchronization with the Xiaomi Watch S1.

What to do if nothing helps: A call for support

If all methods have been tried and the watch is still not connected, contact Xiaomi’s official support.

• 📄 Check or confirmation of purchase (if the hours are guaranteed).
• 📱 Error Logs – Take Screenshots of Error Screenshots in Zepp Life.
• 🔢 Serial number of the watch (located on the box or in Settings) → The phone).

Support contacts:

• 🌍 Official website: mi.com/support
• 📧 Email: support@xiaomi.com (for international users).
• 📞 Phone: Check the website for your region.

Usually the answer comes in 2-3 days, and if the hours are warranty, you may be offered a replacement or repair.

FAQ: Frequent questions about reconnecting Xiaomi Watch S1