XIAOMI Mi Band 4 Review

Review of Xiaomi Mi Band 4

XIAOMI Mi BAND 4 Review

A low price fitness tracker with many features

A short review

Xiaomi released a new version of the Series Mi wristbands, the “Mi Band 4”, in June 2019. As expected, the new Mi 4 has new features and upgraded specifications, which in this price range can be one of the best choices for fitness trackers fans. Read the main features of Xiaomi Mi Band 4 in the following slides.

Specification Tables

We Categorized Specification of Xiaomi Mi Band 4 in the following tables

General specificationsDescription
Brand \ ModelXiaomi \ Mi Band 4
Application typeDaily use, Sport
Case dimensionsLength 21.6mm x Width 10.8mm
Adjustable length of wristband155-216mm
Shape of screenOval
Strap materialThermoplastic polyurethane ( See footnote (1) )
Wristband width18mm
Wrist strap colorsBlack, Brown, Blue, Orange, Pink
Band DetachableRemovable wrist strap (Mi Smart Band 4 is compatible with Mi Band 3 straps)
Buckle materialNot defined
Body materialPolycarbonate
Weight22.1g

Display screenDescription
Touch screenYes
screen typeAMOLED
Screen BrightnessUp to 400 nits (max brightness), brightness adjustable from Mi Band 4 screen ( See Footnote (2) )
screen size0.95″
Display resolution120 x 240 RGB
Multiple touchYes (Capacities touchscreen)
Pixel Density194 PPI
Color Depth24 bit
Screen protection2.5D tempered glass with anti-fingerprint coating
Touchscreen typeOn-cell capacitive touchscreen

Hardware & software SpecDescription
Sensors3-axis accelerometer + 3-axis gyroscope;
PPG heart rate sensor;
Capacitive proximity sensor
Wireless connectivityBluetooth 5 BLE
RAM512 KB
ROM16 MB
GPSNo
Operating SystemProprietary OS
App (for Smartphone)Mi Fit (Official)
Smartphone CompatibilityAndroid 4.4, iOS 9.0 or above
NFCJust in the Chinese version ( See footnote (3) )
MicrophoneJust in Chinese NFC version
Voice Assistant Xiao AIJust in Chinese NFC version
Language Global versionEnglish (default), Italian, French, German, Portuguese
(Can follow the change of mobile phone language settings)
Language Chinese NFC versionChinese (default)
(Can followed the change of mobile phone language settings)
( Click here for more info )

BatteryDescription
Battery typeLiPo
Battery capacity135 mAh (Global Version) – 125 mAh (Chinese NFC version)
Standby timeUp to 20 days (Global Version) – Up to 15 days (Chinese NFC Version) ( See footnote (4) )
Charging timeEqual or less than 2 hours
Charging Type2 Pin Pogo Pin

FeaturesDescription
Sport Functions6 workout modes: 1-Treadmill, 2-exercise, 3-outdoor running, 4-cycling, 5-walking, 6-pool swimming. Count steps, distance, and calories burned
Health monitoringWorkout completion notifications, goal setting, sleep monitoring, heart rate monitoring, all-day heart rate checking, resting heart rate, heart rate chart, idle alerts
Other featuresAlarm, proximity sensor, pre-set watch face, customizable watch face, lock screen, timer, stopwatch, phone alarm and notifications, incoming calls, message notifications, calendar notifications, app notifications, weather forecast, Find my phone, phone unlock, event notification, Night mode, Do not disturb mode (works even without phone), music controls on band, Bluetooth broadcasting, battery level display, different ways to wear, OTA updates

More specificationsDescription
Resists againstWater Resistance Rating 5 ATM ( See footnote (5) )
Operating temperature-10°C ~ 50°C
ButtonSingle touch button (wake up, go back)
Box includedMi Smart Band 4, Wrist strap, Specialized charging cable, User guide

Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease and abrasion. (Back to the table)

The Nit is the standard unit of luminance used to describe various sources of light. A higher rating means a brighter display. Displays for laptops and mobile devices are usually between 200 and 300 nits on average. A rating over 300 nits is solid and a rating above 500 nits is extremely good. (Digitaltrends.com) (Back to the table)

There are 4 versions. Global, Chinese (standard), Russian, Chinese NFC Version. Global, Russian & Chinese Version. support multi-language. Chinese NFC version support both English and Chinese, which have NFC and AI speaker function (Not sure can be used for all countries). (Back to the table)

Mi Smart Band 4 lasts up to 20 days on a single charge according to Huami Laboratory testing: Tested using default settings, with 30 minute automatic heart rate monitoring enabled, receiving 100 notifications per day, 2 alarms per day, vibrating for 5 minutes, touching the touch button 10 times per day, and syncing with the app once per day. Actual results may differ due to differences in environment, use and settings. (Back to the table)

(5) Water resistance is in accordance with GB/T 30106-2013 standard. Testing performed by the National Quality Supervision and Inspection Center for Watches. Mi Smart Band 4 water resistance report code: QT1902005. (Back to the table)

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A close look

Click on any image to enlarge.

CONSUMERS' FEEDBACK ANALYSIS (CFA)

After the study of more than 400 consumers’ comments of Xiaomi Mi Band 4 on AliExpress and Gearbest websites, we analyzed them and prepared the following sections. These sections form the CFA method and we strongly recommend to see the “CFA method “page to get familiar with this method.

Comments tables

  • You can find description about Comments tables on CFA method page.
  • Horizontal scrolling of the tables has been enabled on low width screens.

Purchase Recommendation and Monitoring

category of commentsEXCELLENT (%)GOOD (%)AVERAGE (%)POOR (%)
Recommendation17.282.800
Step counter accuracy3.376.7200
Heart beat accuracy11.181.57.40
Exercise monitoring089.510.50
Sleep monitoring13.663.722.70

Display

Category of commentsEXCELLENT (%)GOOD (%)AVERAGE (%)POOR (%)
Quality138700
Brightness3.296.800
Readability59500
Theme ( watch face)
4.890.44.80
Touch11.188.900

Battery

Category of commentsEXCELLENT (%)GOOD (%)AVERAGE (%)POOR (%)
Longevity18.981.100
Charger9.136.454.50
Charging time49600

Main Features

Category of commentsEXCELLENT (%)GOOD (%)AVERAGE (%)POOR (%)
Notification9.190.900
Music Control
585100
Workout Modes085.714.30
Heart rate monitoring
090100
Alarm1077.812.20

Hardware

Category of commentsEXCELLENT (%)GOOD (%)AVERAGE (%)POOR (%)
Build Quality
18.281.810.50
Strap quality6.793.300
Beauty21.478.600
Convenience16.278.45.40
Water resistant
010000

Software

Category of commentsEXCELLENT (%)GOOD (%)AVERAGE (%)POOR (%)
MiFit app5.384.210.50
Built-in Operation system089.510.50
Language supporting085.714.30
Mi&Phone Connection4.790.54.80
Firmware update
093.76.30

GearsGuide Rating

We analyzed “Comments Tables” and prepared star ratings for each category of the tables in the following. With these ratings, it’s more tangible for you to see the consumers’ feedback if you don’t want to spend your time to analysis the tables. 

Monitoring

Heart Rate Accuracy 3.8/5
3.8/5
Step Counter Accuracy 3.5/5
3.5/5
Exercise Monitoring 3.6/5
3.6/5
Sleep Monitoring 3.7/5
3.7/5
Average 3.6/5
3.6/5

Display

Quality 3.9/5
3.9/5
Brightness 3.8/5
3.8/5
Readability 3.8/5
3.8/5
Watch Face 3.7/5
3.7/5
Touch 3.9/5
3.9/5
Average 3.8/5
3.8/5

Hardware

Build Quality 4.3/5
4.3/5
Strap Quality 3.9/5
3.9/5
Convenience 3.9/5
3.9/5
Beauty 4/5
4/5
Water Resistant 3.8/5
3.8/5
Average 4/5
4/5

Software

MiFit App 3.7/5
3.7/5
Built in Operation System 3.6/5
3.6/5
Language supporting 3.6/5
3.6/5
Mi & Phone Connection 3.7/5
3.7/5
Firmware Update 3.6/5
3.6/5
Average 3.6/5
3.6/5

Battery

Longevity 4/5
4/5
Charger 3.2/5
3.2/5
Charging time 3.8/5
3.8/5
Average 3.7/5
3.7/5

Main Features

Notification 3.9/5
3.9/5
Music Control 3.7/5
3.7/5
Work Out 3.6/5
3.6/5
Heart rate Monitoring 3.6/5
3.6/5
Alarm 3.7/5
3.7/5
Average 3.7/5
3.7/5

Purchase Recommendation

3.9/5
3.9/5

Pros & Cons

We achieved the Pros and Cons of Mi Band 4 with analysis of the previous sections of CFA method and some comments of the users.

Display Quality

According to GearsGuide Rating, Consumers say the following features about Display: High-quality AMOLED display, Sensitive touch screen, Bright and readable screen especially in the outdoor area and many available watch faces.

Build Quality

The average rating of 4 out of 5 for Hardware indicates High build quality, Strap Convenient, Lightness, beauty and Waterproof of Mi Band 4.

Battery Life

Same as Mi Band 3, Mi 4 has a powerful battery to last in different situations between 10 to 25 days. It really save the power.

Heart Monitoring

Heart Rate monitoring takes a Good rating from the users.

Step Counter

Although users have given a good score on the step counter of Mi Band 4, due to some comments such as steps count in car or bus, Xiaomi has to work on it more.

Lack of GPS

GPS is important for those who need some data like Distance, Speed, Position. Mi Band 4 doesn't have a built-in GPS.

Charger

It is not easy to unplug the core to charge it. Also, the charger cable is short.

Mono-tasking

Mi 4 is not multitasking, for example can’t run stopwatch and workout mode together.

Recommendation

GearsGuide recommends Mi Band 4 to the following persons. The recommendations are offered, depending on the different specifications of Mi and the conditions of the persons. 

Money Saver

Many features but low price, this is what a money saver wants.

Daily Use

Call and message notification, Music control, Long Battery life, etc make daily activity easier.

Fitness

Work out Modes, Heart rate monitoring, Pedometer,calories burned, etc help any one while exercising.

Consumers' Selected Comments

  • Only 2 hours to have full charged battery
  • Good display and readable under the sunlight
  • Hear rate measurement is accurate.
  • No need your phone Bluetooth to be turned on while exercising or sleeping, it will sync next time you connect to your phone.

Source: GearBest.com

  • For charging of battery, need to disconnect body (Core) from strap.
  • Lack of built-in function of shooting long distance photos.
  • Cannot remove installed watch face.

Source: GearBest.com

  • Password protection inside Mi for access limitation to personal data of Mi Band 4
  • 77 different themes
  • Different apps: “Mi band 4 watch face” gives you thousands of different watch faces, with “Mi Bandage for Mi Band and Amazfit” control the phone camera to take pictures, “Master for Mi Band” have more analysis in comparison with the official app (Mi fit), mi maps for smart band sync with maps and send the navigation notifications to Mi.

Source: GearBest.com

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$24.93 - 33.91

Original Xiaomi Mi Band 4

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$19.91 - 33.08

Original Xiaomi Mi Band 4

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$26.60


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$25.99


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