How to set up your own time on the fitness bracelet Xiaomi Mi Band 4 without connecting to a smartphone

Fitness bracelet Xiaomi Mi Band 4 remains a popular gadget even years after the release, but many users face the problem: how to update the time on the device if you do not have a smartphone with the Mi Fit or Zepp Life application. Under normal conditions, the bracelet automatically synchronizes date and time via Bluetooth, but what to do if the phone is dead, lost or simply missing?

In this article, we will explore all the ways you can manually adjust your time on the Mi Band 4 without using a smartphone, from standard bracelet features to alternative methods using third-party devices. You will learn what limitations exist, how to avoid typical errors and what to do if the time on the bracelet is lost too often.

Why Mi Band 4 is a bit of a mess without a smartphone

The main reason for the incorrect display of time on Xiaomi Mi Band 4 is the lack of synchronization with an external source. GPS-They're a module or automatic synchronization over mobile networks:

• 📱 Connect to a smartphone – the bracelet receives time, date and time zone data via Bluetooth each time it connects to the app.
• ⏱️ Real-time internal clock (RTC) — hardware module that supports counting even when the bracelet is turned off, but can "go away" for a few minutes a month.
• 🔋 Resetting – after zeroing data (Factory Reset), the bracelet loses all settings, including time stamps.

Without regular synchronization with the smartphone, the internal clock of the Mi Band 4 begins to lag or rush. The rate of deviation depends on the quality of the quartz resonator in the RTC module - some devices have an error of 1-2 minutes per week, others remain within 10-15 seconds per month.

• 🔄 Flashing the bracelet through third-party utilities (for example, Mi Band 4 Tools).
• 🛠️ Disassembly of the body (even a short-term battery shutdown resets the battery) RTC).
• ❄️ Exposure to extreme temperatures (below) -10°C or higher +40°C).

Method 1: Manually adjusting time through the bracelet menu

The most obvious but little-known way is to use the built-in Mi Band 4 menu, and although there is no direct "Set Time" option, you can get around this restriction through alarm settings.

1. Wake up the bracelet screen by pressing the touch button or bringing your hand to the display.
2. Scroll the menu to the right to the item More (three dots).
3. Select an alarm clock. → Add.
4. Set an arbitrary alarm clock time (for example, 07:00) and save.
5. Return to the main menu and check the current time – it should update automatically after the alarm clock is set.

This method works because when you add an alarm clock, the forced-update bracelet is an internal RTC clock.

Make sure the bracelet is charged at least 20 times%|

Try to set 2-3 alarm clocks with different times |

Reboot the bracelet after setting up (Settings → Reboot)|

Repeat the procedure if the time is not updated the first time-->

⚠️ If the time on the screen has not changed after the alarm is created, then the firmware of your Mi Band 4 blocks the manual update. RTC. In this case, an alternative method will be required (see the following section).

Method 2: Using a third-party Bluetooth adapter (PC or other gadget)

If manual settings through the menu didn’t work, you can “cheat” the bracelet by simulating the connection to the smartphone. This will require any device with Bluetooth 4.0+ (laptop, tablet, even other fitness bracelet) and specialized software.

Let’s take a closer look at the settings via PC with Gadgetbridge:

1. Download and install Gadgetbridge (a free alternative to Mi Fit).
2. Turn on Bluetooth on your computer and start the program.
3. From the Devices menu, select Add a new device → Mi Band 4.
4. Hold the bracelet to the Bluetooth adapter (distance not more than 10 cm) and wait for the connection.
5. After synchronization, go to Device Settings → Time and Date and set the current values.

Important: When you first connect, Gadgetbridge may request confirmation on the bracelet (vibration + screen blinking). If the confirmation does not come, reset the bracelet (Settings → Reboot) and try again.

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If you don't have a second gadget, try borrowing a friend's smartphone for 5 minutes -- enough to synchronize the time. Once set up, the bracelet will hold the correct data for weeks.

Method 3: Update firmware through custom utilities

If none of the previous methods worked, the radical solution is to flash the bracelet with custom firmware with a corrected RTC module. This method is suitable for advanced users, as it requires:

• 🖥️ Computer with Python 3.7+ and installed libusb drivers.
• 🔌 Firmware cable (can be made independently from the USB-extensioner).
• 🛠️ Knowledge of working with the command line.

The most popular firmware utility is miband4-tools (open project on GitHub).

# Dependency Installation (for Windows)


pip install pyusb pyserial click




Cloning of the repository



git clone https://github.com/freeyourstream/miband4-tools.git




cd miband4-tools




Firmware (example of command)



python miband4_tools.py --mac AA:BB:CC:DD:EE:FF --time-sync

Once the firmware is successfully installed, the bracelet will sync time to the PC each time you connect via Bluetooth.

⚠️ Warning: Wrong firmware can turn Mi Band 4 into a brick. ADB Or Fastboot, you better consult a specialist, and custom firmware can deprive you of warranty (if it is still valid).

How to check the accuracy of time after setting up

After manual synchronization, it is important to make sure that the time on the Mi Band 4 does not get lost too quickly.

1. Check the time on the bracelet with a reference source (e.g. time.is).
2. Detect the deviation in 24 hours, normal error up to 5 seconds a day.
3. If the bracelet is 1+ minute behind, the RTC module is defective (requires repair).

For convenience, you can use the test:

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If the bracelet is 10+ seconds per hour behind, the problem is most likely in the hardware (wear of the quartz resonator), in which case only the replacement of the board will help.

Frequent Mistakes and How to Avoid Them

When you manually set your time, you often make common mistakes that lead to even bigger problems.

• ❌ Ignoring the time zone – if you manually set the time, remember to adjust the belt (e.g., time zone, UTC+3 Otherwise, the alarm clocks will not go off in time.
• ❌ Reset bracelet without a tether - after Factory Reset, time will reset to factory settings (January 1, 2019), and without a smartphone, it will be more difficult to return the current date.
• ❌ Use of unofficial firmware – some custom builds turn off synchronization RTC energy-saving.

To minimize the risks:

• 📌 Always write down the current bracelet settings before experimenting (you can take a screen picture).
• 📌 Before firmware, check reviews about a particular version of the software on forums (for example, 4PDA).
• 📌 If the bracelet starts to glitch after setting the time, reset (Settings) → Reset) and repeat the procedure.

Alternative solutions: what to do if nothing helps

If all the ways have been tried and time on Mi Band 4 is still running out, consider the alternatives:

• 🔧 Repair of the module RTC — in service centers can replace the quartz resonator (cost) ~500–1000 rubles).
• 🔄 Buying a used bracelet - Mi Band 4 on the secondary market costs 800-1500 rubles (cheaper than repairs).
• ⏱️ Use an external watch – wear a regular watch on your second hand or switch to a smart watch (e.g. Amazfit Bip U).

You can also try to “reanimate” the bracelet programmatically:

# Commands to reset RTC via Gadgetbridge (requires root on Android)


adb shell




su




am start -n org.gadgetbridge/org.gadgetbridge.impl.GBDevice$ForceSyncTask




exit

Important: These commands only work on some versions of the firmware and can result in data loss (steps, pulse, etc.).

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If the bracelet is older than 3 years and the problem with time is accompanied by a quick discharge, it is cheaper to buy a new Mi Band 6/7 - they are deprived of many hardware shortcomings of the fourth model.

FAQ: Answers to Frequent Questions