Connecting Xiaomi Mi Band 4 to iPhone: full instructions with solutions to typical errors

The Xiaomi Mi Band 4 remains one of the most popular fitness bracelets due to its combination of affordable price, reliability and wide functionality. However, iPhone owners often face difficulties in the first synchronization of the device, the reason lies in the peculiarities of the Apple ecosystem: limited support for Bluetooth Low Energy (BLE) in the background, the specifics of iOS applications and frequent security updates that can block the connection.

In this article, you will find not only step-by-step instructions for connecting the Mi Band 4 to an iPhone, but also solutions to 90% of typical problems, from the “failed to connect” error to the lack of notifications. We will also analyze which app is best to use in 2026: the official Mi Fitness or an alternative Zepp Life (formerly Amazfit), and give recommendations for optimizing the work of the bracelet with iOS.

If you've tried to plug in the bracelet and you've encountered an error, skip the first partition and go straight to the problem-solving section. For beginners, let's start with the basic setup.

Device requirements before connection

Before you start syncing, make sure your devices meet the minimum requirements:

• 📱 iPhone: iOS version is not lower than 12.0 (recommended 15.0)+ For stable operation. On iOS 16 devices+ You may have problems with background data updates – more on this below.
• 💪 Xiaomi Mi Band 4: firmware no older than 2021. Bandlets with firmware 1.0.9.54 and below may not support iPhone due to outdated protocols BLE.
• 📶 Bluetooth: iPhone should be enabled Bluetooth 4.2+ (All models starting with iPhone 5s Turn off Charge Savings mode, as it limits the operation BLE.
• 🌍 App Store Region: Mi Fitness and Zepp Life apps must be downloaded from Russian, European or Asian stores.

Important: If your Mi Band 4 has previously been synced with an Android device, reset your bracelet settings via the Settings → Reset menu before connecting to your iPhone. Otherwise, profile conflicts may occur.

Which app to choose: Mi Fitness or Zepp Life?

In 2026, Mi Band 4 users have two official options to connect to the iPhone:

We choose Zepp Life, which is developed by Huami, the owner of the Amazfit brand, which works closely with Xiaomi, which is better optimized for iOS, less likely to emit synchronization errors, and offers advanced health analysis capabilities, but if you are critical to integrating with the Xiaomi ecosystem (for example, for a smart home), you will have to use Mi Fitness.

⚠️ Warning: Don't install both apps at the same time! This can lead to data conflict and bracelet malfunctions. If you've previously used Mi Fitness, remove the first software before switching to Zepp Life and reset Mi Band 4.

Step-by-step instructions for connecting

Follow this algorithm to sync the Mi Band 4 with your iPhone without any errors:

1. Install the app: 📲 Download Zepp Life or Mi Fitness from the App Store. 🔓 Allow access to Notices, Bluetooth and Health (if required).
2. Register an account: 📧 Use a valid email or phone number. Mi Fitness may require a Xiaomi account. 🔐 Create a strong password – the bracelet data will be linked to this profile.
3. Turn Bluetooth on your iPhone: 🔵 Go to Settings. → Bluetooth and activate the function. 🚫 Don’t manually connect Mi Band 4 via Bluetooth menus – this could disrupt the app!
4. Add the device in the app: 🔍 In Zepp Life, click Profile → Add the device → Mi Smart Band 4. 📱 Follow the instructions on the screen. The bracelet should vibrate when detected.
5. Confirm the connection: ✅ On the screen of the iPhone will appear confirmation code – compare it with the code on the bracelet. 👆 Click on the Mi Band 4 touch button to confirm the connection.

The bracelet vibrated when the ligament was|The app displays the charge level|Synchronized steps for today|Test notifications are coming in-->

If there is an error at some point, go to the problem-solving section, and if it goes well, you can start setting up notifications and additional features.

Set up notifications and calls

One of the main reasons for buying the Mi Band 4 is that you can get notifications from your iPhone right on your wrist, but by default, this feature may not work properly.

1. Allow notifications in iOS:

Go to iPhone Settings → Notifications → Zepp Life and enable options:

- Allow notices

- Sounds (optional)

- Badges on the lock screen

- Show in the notification history

2. Set up filtering in the application:

In Zepp Life, open Profile → Mi Smart Band 4 → Notifications and select the apps you want to see on your bracelet. Tip: Turn off unnecessary WhatsApp or Telegram chats so you don’t clog your bracelet screen.

3. Check the limitations of iOS:

Since iOS 13, Apple has limited background work BLE-So that the notifications are stable:

- Open Settings → Zepp Life → Background update and select Wi-Fi and cellular.

- In Settings → Privacy → Geolocation Services → Zepp Life Install Always.

⚠️ Warning: If notifications stop coming after locking your iPhone screen, it's due to Apple's energy saving policy: The decision is to open the Zepp Life app periodically (every 2-3 hours) to reset the timeout. BLE-linkage.

💡

To quickly check notifications, send yourself a test message via Messages or Mail. If the bracelet doesn't vibrate, restart your iPhone and re-synchronize your devices.

Solving Typical Connection Problems

Even with the exact instructions, iPhone users may encounter errors, and consider the most common ways to fix them:

1. Error "Unable to connect" or "Device not found"

Reasons:

- Conflict with others BLE-devices (for example, AirPods headphones).

- Outdated firmware bracelet or iOS.

- iOS restrictions for background processes.

Decisions:

Disable all other Bluetooth devices in Settings → Bluetooth.

Reboot your iPhone and bracelet (hold the Mi Band 4 button for 15 seconds).

Update the bracelet firmware through the application (Section Profile → Mi Smart Band 4 → Software Update).

If you are using iOS 16+, temporarily turn off Low Consumption mode in Settings → Battery.

2. the bracelet connects but does not synchronize data

Reasons:

Lack of access to Apple Health (if integration is enabled)

- Failure in the app cache.

Unstable Internet connection (data synchronized via the cloud)

Decisions:

Go to iPhone Settings → Privacy → Health → Apps → Zepp Life and enable all permissions.

- Delete the app cache: iPhone Settings → Zepp Life → Erase data (does not delete bracelet data!).

Connect to Wi-Fi and manually start sync in the application (pull the screen down).

3. notifications are delayed or not received at all

Reasons:

- iOS restrictions for background processes.

Conflict with other fitness tracker apps (e.g. Google Fit)

- Wrong settings in the bracelet itself.

Decisions:

In Zepp Life, go to Profile → Mi Smart Band 4 → Notifications and check that the Display Content option is enabled.

- Disable Battery Optimization for Zepp Life in iPhone Settings → Battery → Battery status.

Remove other fitness apps that may conflict with the Mi Band 4.

Optimizing the Mi Band 4 with iPhone

To ensure that the bracelet works stably and does not discharge in a day, follow these tips:

• 🔋 Saving charge: Turn off the constant pulse in the bracelet settings (saves up to 30% of charge.
• 📶 Scheduled Sync: In Zepp Life, set up automatic sync once every 4 hours instead of constant.
• 🚫 Disable Sleep Autodetermination if You Sleep Less Than 6 Hours – The Algorithm Will Falsely Activate.
• 🔄 Reboot: Reload the bracelet once a week (hold the 10 seconds button) to reset the cache BLE-module.

For iOS 17+ users: Apple has tightened the rules for background processes. If the bracelet is often turned off, add Zepp Life to your Favorite Contacts (this increases the priority of the process in the system).

1. Open Zepp Life and go to Notifications.
2. Click Add to Favorites (if the option is available).
3. In iPhone Settings → Notifications, set Zepp Life priority Immediate Delivery.

💡

The most common reason Mi Band 4 is unstable with iPhone is because of iOS restrictions on Bluetooth background activity. Open the Zepp Life app regularly to reset connections.

Alternative ways of connecting

If standard methods don’t work, try these workarounds:

1.Using Notify & Fitness (for advanced users)

Notify & Fitness for Mi Band allows you to bypass the limitations of iOS and configure advanced notifications.

• 🔓 Jailbreak or installing a developer certificate (GitHub instructions).
• 🛠 Manual addition UUID bracelet in settings BLE.

⚠️ Unofficial apps may violate Apple’s policies and result in iCloud account being blocked.

2. Connection via Android emulator

If you have a Mac or PC, you can temporarily connect the bracelet through an Android emulator (like BlueStacks), update the firmware, and then return it to your iPhone.

• 🔄 Hanging bracelet on the Xiaomi logo.
• 📥 Unable to update firmware through iOS.

3.Dumping via Mi Band 4 Tools

Mi Band 4 Tools (available on the App Store) allows you to perform a deep reset of the bracelet without being tied to your account.

• 🔒 The bracelet is tied to another account and does not untidy.
• ⚙️ Settings went down after the iOS update.

Frequent questions about Mi Band 4 and iPhone