Mi Band 4 vs Mi Band 3 vs Mi Band 2
| Product Name | Mi Band 4Xiaomi Mi Band 3Xiaomi Mi Band 2 |
| Product Image |    |
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| Brand | Xiaomi Xiaomi Xiaomi |
| Category | Smart Band Smart Band Smart Band |
Where to Buy & Price
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General
| Release | June, 2019 May, 2018 June, 2016 |
| Device Name | Xiaomi Mi Smart Band 4 Xiaomi Mi Band 3 Xiaomi Huami Mi Band 2 |
| Device Type | Smart Band Smart Band, Fitness Tracker Fitness Tracker Smart Band |
| Ideal for (Gender) | Both Men & Women Both Man & Woman Both Men & Women |
| Device Model | XMSH07HM (Global non-NFC Version), XMSH08HM (Chinese NFC Version) |
| Box Items | Mi Smart Band 4, Wrist strap, Specialized charging cable, User guide 1x Mi band 3(Chinese Version) , 1x Charging Cable , 1x User Manual |
| Predecessor | Xiaomi Mi Band 3 Mi Band 2 Xiaomi Mi Band |
| Successor | - - |
Body
| Shape | Rectangular Ractangel Ractangular |
| Case Dimensions | Length 21.6mm x Width 10.8mm - 22.50 x 1.57 x 1.05 cm |
| Case/Bezel | Polycarbonate Plastic + Alloy, TPEE Thermoplastic copolyester |
| Strap Material | Thermoplastic polyurethane TPEE Thermoplastic elastomer |
| Strap/Band Size | Length 155-216mm & Width 18mm - |
| Replaceable Band | Yes No Yes |
| Weight | 22.1g 20g 19 g |
| IP Rating | - IP67 IP67 |
| Water Resistance | 5 ATM (Water resistant up to 50m) 5ATM Water Proof, Up to 50 Meters Yes |
| Colors | Black, Red or Blue (Strap available in 6 color option with exclusive Marvel's Avengers limited additions) Black, Blue, Pink Black, Orange, Green, Blue |
| Other Information | - - |
Display
| Type | AMOLED OLED OLED |
| Screen Size | 0.95 Inch (Up to 400 nits) 0.78 Inch 0.42 inch |
| Screen Resolution | 120 x 240 pixel 128 x 80 Pixels - |
| Pixel Density | 194 PPI - - |
| Multi Touch | Yes (Capacities touchscreen) Single Touch Button Single Touch Button |
| Screen Protection | 2.5D Tempered glass with anti-fingerprint coating - - |
Platform
| Operating System | Proprietary OS Proprietary OS Proprietary OS |
| Chipset | - - DA14681 |
| CPU | - - - |
| GPU | - - - |
Memory
| RAM | 512 KB - - |
| Internal Memory | 16 MB - - |
| SD Card Slot | No No - |
Activity Tracker
| Distance | Yes Yes No |
| Heart Rate | Yes Yes Yes |
| Steps | Yes Yes Yes |
| Calories Consumption | Yes Yes |
| Sleep | Yes Yes Yes |
Connectivity
| Bluetooth | 5.0 Bluetooth V4.2 Bluetooth 4.2 BLE |
| GPS | No No No |
| WiFi | BT5.0 BLE No No |
| NFC | No (Global Version), Yes (Chinese Version) Yes (Chinese Expense Version) No |
| USB | No No No |
| Radio | No No No |
Control
| Touch | Yes Touch Key Yes |
| Watchface | Customizable No Digital |
| Voice Command | Yes (Only in Chinese Version) No No |
| Personal Assistant | Xiao AI, on in Chinese Version No No |
| Smartphone Compatibility | Android 4.4+ or iOS 9.0+ Android 4.4+ or iOS 9.0+ Android 4.4 + / iOS 7.0 + |
| Smartphone Companion App | Mi Fit App Mi Fit Mi Fit App |
Notifications
| Activity Alert | Yes Yes Yes |
| SMS | Yes Yes Yes |
| Yes Yes Yes | |
| Incoming Call Alert | Yes Yes Yes |
| Calendar Reminder | Yes - - |
| Weather Forecast | Yes - - |
Sensors
| Accelerometer | Yes Yes Yes |
| Gyro | Yes - - |
| Heart Rate | Yes Yes Yes |
| Light | Yes No - |
| Compass/Magnetometer | Yes No - |
| Vibration/Haptics engine | Yes Yes Yes |
| Other Sensors | The new six-axis sensor - Pedometer |
Sound
| Speaker | No No No |
| Microphone | Only for Chinese Version No No |
Battery
| Battery Type | Lithium Polymer |
| Capacity | 135mAh 110mAh, Lithium polymer 70 mAh |
| Battery Life | 20 days battery life Up to 20 Days 10 Days |
| Standby | - Up to 20 Days 30 days |
| Talk-Time | - - - |
| Wireless Charging | Charging Dock with USB Cable Charging Dock with USB Cable - |
| Charging Time | ≤ 2 hours - - |
| Quick Charging | - - - |
Additional Features
| Language | Multilingual and Chinese - English, Chinese |
| App Store | No No No |
| Builtin Payment Service | Mi Pay (Chinese Version) MiPay (NFC Version) No |
| Bluetooth Music | No No No |
| Other Features | - Flip Wrist to Wake up screen, All Phone Notifications mirroring, Unlock Phone without password etc No |
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