Many wearable electronics owners face a situation where the screen of their favorite gadget displays the wrong time, this can occur after a change of the battery, resetting the settings or simply because of a temporary lack of communication with the smartphone. Owners of Xiaomi Mi Band 2 often wonder how to fix this situation and return the accuracy of the readings.
Unlike current models, where synchronization is instantaneous and imperceptible, Xiaomi’s second-generation wristbands require an understanding of how they work. The main feature is that the device does not have a built-in GPS module or its own connection to the cellular network to obtain time data.
So if you notice a discrepancy in readings, don't panic and look for hidden buttons on the tracker itself. Mi Fit (or newer versions of apps like Zepp Life) takes on the role of the main timekeeper. Properly configuring your smartphone automatically solves 99% of the time tag problems on the accessory.
Principles of time synchronization
The fundamental principle of the second-generation fitness trackers is dependent synchronization: the bracelet does not know how to independently determine the time zone or switch to summer/winter time, it receives a data packet that includes the current hour, minute, second and date, at the time of the connection using Bluetooth Low Energy protocol.
The data exchange is not constant, but at certain moments: when you open an application, when you receive a notification or when you ask the user to update the statistics. If at this point your smartphone is in “flight” mode or Bluetooth is turned off, the Mi Band 2 will continue to count down the time on its internal, less accurate quartz generator, gradually running away or lagging behind.
It is important to understand that automatic synchronization can be blocked by aggressive power saving settings of the Android or iOS operating system.The system can "kill" the background process of the application, preventing it from contacting the bracelet to correct the time, which is why users often see that time is lost after a night or a long downtime.
Why does time go wrong after replacing the battery?
Preparing the smartphone for setting
Before you start troubleshooting, you need to make sure that the time source, your smartphone, is set up correctly. The errors often lie not in the bracelet, but in the basic settings of the phone. Check if the automatic network time settings are enabled in the system settings.
Also critical is choosing the right time zone, so if you're in Moscow and the system has Vladivostok belt, even if you synchronize over the network, the time will be incorrect, and the bracelet will copy this error. Make sure that the date and time settings have a "Use Network Time" checkmark.
To work smoothly, the Xiaomi Mi Band 2 needs to allow Mi Fit or Zepp Life to access geolocation. This seems odd, but Bluetooth protocols on Android require access to location to scan devices. Without that permission, the app simply cannot find a tracker to sync.
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Turn on the display of seconds in the time settings on your smartphone, which will help you visually track the moment of synchronization: when the seconds on the phone and bracelet (if the display is enabled) coincide, then the data is transmitted successfully.
Step-by-step instructions for changing time
The very process of "setting" time on the wristband is actually a process of forced synchronization. To change the time, you need to initiate a connection between devices. Open the companion app on your smartphone and wait for the main screen with the pedometer to appear.
Click on your device icon (usually in the top corner or profile). In the device menu, find Sync or just pull the screen down for updates. At this point, data packets are exchanged, and the time on Mi Band 2 should change to current.
If time has not changed, try to perform the following actions in strict sequence:
- 📱 Make sure that the Bluetooth on your phone is on and active.
- 🔄 Leave the application completely (close the background processes) and run it again.
- 🔗 In Bluetooth phone settings, find Mi Band 2, click “Forget device” and pair again.
- ⏱ After a successful connection, wait. 1-2 minutes without active action for background synchronization.
☑️ Checklist of successful synchronization
Sometimes it helps to change the format of the time. Try to switch the format in the phone settings from 12-hour to 24-hour and back again, which can trigger a recalculation of the time stamp and update the data in the system, which then passes to the tracker.
Working with time zones and transitions
Xiaomi Mi Band 2 owners who travel frequently face the problem of manually translating arrows. Since the device does not have its own location module, it blindly follows the phone. If you fly to another time zone, the first thing you need to do is change the time settings on your smartphone.
When you change your phone's time zone, open the Mi Fit app. It automatically detects the change in system time and the next time you sync it, it will transmit new data to the bracelet. Critically, don't manually change the time inside the Mi Fit app itself, if you have this option, you'd better rely on Android or iOS system settings.
Problems can arise when you switch to daylight saving time in regions where it is relevant, if the phone is automatically updated and the bracelet is “backlogged” by an hour, then the sync is not correct, and forced updating of data through the main menu of the application usually solves the problem instantly.
| Situation | Action on a smartphone | The result is Mi Band 2 |
|---|---|---|
| Time zone change | Auto-change of time over the network | Time will be updated after synchronization |
| Bracelet battery discharge | Charge and plug in | Reset by 00:00, need synchronization |
| Bluetooth shutdown | Turn on Bluetooth | Time will be behind for the time of separation |
| Mi Fit app failure | Reinstallation of the annex | Complete reset of time settings |
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The Mi Band 2 bracelet doesn't have its own memory to store the time settings after discharge. It always relies on an external source device.
Solving problems with desynchronization
There are times when standard methods don’t work and time on Mi Band 2 keeps running away or displaying incorrect data. Often the cause is app cache or user profile errors. Try clearing the Mi Fit app cache through phone settings: Settings → Apps → Mi Fit → Memory → Clear the cache.
If cleaning the cache didn't help, a more radical method may be needed - untie the device. In the application profile, select your bracelet and press Unbind or Unbind. After that, remove the device from the Bluetooth list in the phone settings and pair as with a new gadget.
⚠️ Note: When unbinding the device, all accumulated training and sleep data that has not yet been synced to the server may be lost. Before unbundling, make sure you open the application and wait for the full download of statistics.
Another reason for desynchronization may be the outdated version of the firmware of the bracelet itself. The device menu often shows a notification about the availability of updates. The firmware contains corrections for Bluetooth stack errors, which can improve connection stability.
Setting up the time and date format
Although the Xiaomi Mi Band 2 itself has a limited screen and displays time only in digital format, there are some aspects that can be customized in the app, such as choosing whether to display seconds (although there are usually no seconds on the bracelet screen, they are important for in-app logs).
The date format is also set through the app. Go to the device profile, look for bracelet settings or Display settings, where you can select the order of the day, month and year, and the changes will take effect after the next synchronization.
Some users prefer to use the 12-hour format with the designation AM/PM. To switch to the 24-hour format (which is more popular in the CIS), you need to change the system settings of the language and region on the smartphone, since the application often duplicates the system format.