Xiaomi Mi Band 4 Test - Fitness tracker with color display!

by 1. October 2019

Xiaomi has released the Mi Band 4! The new model of this popular fitness tracker also features an 0.95 inch color display, numerous new sports functions and is waterproof up to 50 meters. In the test lasting several weeks, I took a closer look at the new Xiaomi fitness tracker.




Xiaomi Mi Band 4


Material: TPU
Closure: pin buckle
Size adjustable: 155 - 216 mm
L: 247 mm

tracking unit
Display Type: OLED (color)
Display diagonal: 0.95 inches
Display resolution: 120 x 240 pixels
Display brightness: 400 nit
Color depth: 24bit

Bluetooth: Standard 5.0 BLE
Heart rate sensor: Yes

Pedometer: Yes
Sleep Monitor: Yes
Heart rate measurement: Yes
Date and time: Yes
Alarm function: Yes
Stopwatch: Yes
Notifications: Yes
Music playback control: Yes
Motor Reminder: Yes

Battery type: lithium polymer
Battery capacity: 135 mAh
Battery life: up to 20 days

App: MiFit
Water protection: 5ATM
Size: 17.9 46.9 x x 12.6 mm
Weight: 22.1g

Scope of delivery

1x tracking unit
1x bracelet
1x charging adapter
1x user manual

Update 01. October 2019

GearBest has the Mi Band 4 in both versions reduced in the offer. With the following coupon you can the International version reduced for 25 € and the China version for 22 € to buy. The delivery time is via Priority Line 10-14 business days. If you want to save a few euros, click on the China version which you can also use in German! Further information can be found in the following review.

6 € GearBest Coupon - Xiaomi Mi Band 4 International Version

With this GearBest coupon you can buy the Xiaomi Mi Band 4 reduced in the international version for only 25 €.
6 € Discount
Valid until 31.10

4 € GearBest Coupon - Xiaomi Mi Band 4

With this GearBest coupon you can buy the Xiaomi Mi Band 4 in the China version for only 22 €.
4 € Discount
Valid until 31.10

Foreword: Xiaomi Mi Band 4 Global vs. China

Last year is the end of May Xiaomi Mi Band 3 appeared. Xiaomi complied with the release cycle again this year and the new one at the beginning of June Xiaomi Mi Band 4 released. In addition to the standard model, already from 169 Yuan (about 22 €) Xiaomi has released an NFC model for 229 Yuan (about 29 €) and an Avengers special edition for 349 Yuan (about 45 €).

Here you can buy the Xiaomi Mi Band 4 cheap.

Xiaomi has a special one for the western market Multilingual Global Version released. This is CE-marked, however, renounces NFC and the new Xiao AI functions. Available is the Mi Band 4 Global from about 30 €.

Front side with color display

Design and display

The compact design of the previous Mi bands remains true to Xiaomi. The Bracelet Made of TPU, 18 mm is wide and adjustable in size between 155 - 216 mm. A pin buckle holds the bracelet firmly on the wrist. Practical is the identical bracelet size to the Mi Band 3. Who wants to change from the predecessor to the new Mi band, can use his old bracelet also with the Mi Band 4!

Mi Band 4 capsule with TPU strap

New is the 0.95 inch large touch display. This is of the type AMOLED and now also represents colors (24bit). The high resolution of 240 120 x pixels ensures a crisp, sharp image with a low display diagonal. Special features of the AMOLED are the particularly strong colors and the almost infinite contrast. When black is displayed, the pixels that light up are simply turned off. As a practical side effect, the energy consumption of the panel is reduced.

Tracking unit with OLED color display and backside heart rate sensor

By the high Display brightness of 400 Nit The display remains very readable even in the sunshine. Overall, 5 brightness levels are available. What the display unfortunately misses is an automatic brightness adjustment. The panel is protected by a hardened protective glass. The 2.5D Curved Cut ensures rounded edges and a better look. The capsule-shaped tracking unit is removable and is connected via a 2 pin connector loaded. The charging pins are now on the bottom, so that the charger of the predecessor in contrast to the bracelet is not compatible! The fitness bracelet is waterproof to 5ATM (50 meter) and can therefore be easily worn while swimming.

Processing and delivery

At the quality of workmanship there is nothing to complain about. The Mi Band 4 is expected to be well processed. Even after repeated removal, the inlet of the tracker and the shutter will not let up. The comfort is excellent. The Scope of delivery includes the TPU wristband, tracking unit, USB charging adapter, and instruction manual.

Mi Band 4 included with charger, strap and manual

Xiaomi Mi Band 4 features

Better tracking and new sports modes

The 6 Axis Motion Sensor (3 Axis Accelerometer + 3 Axis Gyroscope) gives the Mi Band 4 new possibilities to track an even wider range of sports. Overall, stand 6 sports to select. In addition to running, treadmill and walking, there are cycling, swimming and free training. All training sessions can be started directly from the smartband. On PPG sensor measures the heart rate of the user. This even works pretty well and provides even in the high pulse range still reasonably comprehensible results.

No GPS, but MiFit GPS

A GPS module is not installed. Instead, the GPS of the connected mobile device can be used for a more accurate tracking. But even without GPS delivers the Pedometer extremely precise results. Depending on the sport, the following data is collected, among others:

  • Elapsed time
  • steps
  • Removal
  • calorie consumption
  • Geschwindigkeit
  • stride
  • heart rate
  • height difference
  • Performance VO2Max
  • Swolf
  • beat number

All data will be sent by Bluetooth 5.0 BLE transferred to the MiFit app and can be viewed in edited statistics. In addition to the edited display of all sports data, the MiFit is the control center of the Mi band. Settings for the bracelet, the notification reception, the weather or the alarm clock can be made directly via the app.

More than 53 Watchfaces

To customize the user interface, Xiaomi is the same 53 different watchfaces to select. The high-resolution AMOLED display offers new possibilities to display even more unusual watchfaces. In addition to time, date and steps, animations can also be displayed.

Especially interesting is the possibility to develop your own Watchfaces for the Mi Band. Own creations or watchfaces from the community can be loaded via app (MiBand4 - Watchface) directly onto the bracelet.

Language Assistant and NFC

!! The following applies exclusively to the Chinese version of Mi Band 4 !!

In China, the NFC model supports the Xiao AI language assistant. The Xiao AI is indeed equated with "Western" language assistants like Google Voice, Alexa or Siri understands so far but only Chinese, and is therefore of interest only to the Chinese users.

To what extent the Xiaomi Mi Band 4 will receive a Western language assistant remains to be seen. The Xiaomi company Huami has a close relationship with the Amazfit Verge already made. Instead of the Xiao AI, the international model of the Smartwatch with Amazon Alexa has appeared. The NFC function is also denied to the Chinese market, so that mobile payment with eg Google Pay is not possible!

Notifications, music control and more

In addition to sports functions, the Mi Band 4 also offers other functions that make everyday life easier for the user. Incoming on the smartphone App and call notifications can be displayed directly on the fitness tracker. For example, if you receive a WhatsApp message, you can retrieve it via the bracelet. However, it is not possible to reply to messages or SMS!

Xiaomi Mi Band 4 color display with status

The music function allows you to control the songs played on your smartphone via the Mi Band. Songs can be paused and skipped, as well as the playback volume can be adjusted. The name of the currently playing song is also displayed on the fitness tracker.

Xiaomi Mi Band 4 color display with weather indicator

own vibration patternthat can be created via the MiFit app, customize the visibility of incoming notifications. Other features include:

  • The display of the weather with weather forecast
  • An alarm clock, a stopwatch and a timer
  • A DND sleep mode so that no more notifications are received
  • Look for the smartphone with the Mi band, or vice versa to search the Mi band with the smartphone
  • Safely unlock the smartphone with the Mi Band
  • Record the sleep and display the sleep data or sleep irregularities via the Mi Fit app
  • A motion memory


The capacity of the battery was up 135 mAh or 125 mAh (NFC model) raised. Xiaomi himself gives the battery life up to 20 days.

In practice, the brightness level 3, 24-hourly heart rate measurement and 6 hours of sport / week as well as constant Bluetooth connection to the smartphone became one Duration of 16 days measured. A complete one charging nimmt 80 Minutes to complete.

Price Comparison

You want to know where to buy the Xiaomi Mi Band 4? In our price comparison we list the current offers of the most popular shops. All prices are checked and updated several times a day. Should a shop appear several times, it concerns the different warehouses of the dealer.

6 € GearBest Coupon - Xiaomi Mi Band 4 International Version

With this GearBest coupon you can buy the Xiaomi Mi Band 4 reduced in the international version for only 25 €.
6 € Discount
Valid until 31.10

4 € GearBest Coupon - Xiaomi Mi Band 4

With this GearBest coupon you can buy the Xiaomi Mi Band 4 in the China version for only 22 €.
4 € Discount
Valid until 31.10

Price Comparison - Buy Banggood
Shipping Shipping from China
Price comparison - buy offer at GearBest
Shipping Shipping from China
Price comparison - buy offer at Geekmaxi
Shipping Shipped from Germany
Price comparison - buy offer at Geekbuying
Shipping Shipping from Europe

Price too high? Use our price alarm clock!

Prices last updated on: 7. October 2019 11: 01

Final Words


►Good build quality
►Come wearing comfort
►By 5ATM waterproof and swim mode
►Color display with good readability
►Individual Watchfaces
►Precise pedometer
►Features of the Mi Fit app
►Receiving notification content
►Good battery life


►No automatic brightness adjustment
►Heart frequency measurement in the higher pulse range slightly inaccurate
►No answer option for notifications
►Global version without NFC and voice assistant

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With the Xiaomi Mi Band 4, the Chinese electronics giant once again presents a very well-equipped fitness bracelet for a small price. The OLED display extends the range of functions even further. In addition to fancy watchfaces, the readability in sunshine has improved significantly.

Also interesting are the new sports modes. With the sport mode "swimming" and the 5ATM waterproofness, users also get far-reaching possibilities of use in the water. The battery life is still very good with realistic 16 days. Overall, the Xiaomi Mi Band 4 is unreservedly recommended!

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