Mi Smart Band 4 vs Mi Band 3 comparison
        
        
            
                
                    
                        | 
                                
                                
                             
                                
                                
                             |   |   | 
                
                
                    | ratings | 
| Overall NDTV Rating | Read Review | Read Review | 
| Design and comfort Rating |  |  | 
| Tracking accuracy Rating |  |  | 
| Companion app Rating |  |  | 
| Battery life Rating |  |  | 
| key specs | 
| Display Type | AMOLED | OLED | 
| Water Resistant | Yes | Yes | 
| Heart Rate Monitor | Yes | Yes | 
| Compatible Devices | Android, iOS Phones | Android phones, iPhone | 
| Battery Life (Days) | 20 | 20 | 
| general | 
| Brand | Mi | Mi | 
| Model | Smart Band 4 | Band 3 | 
| Model Name | Band 4 | Band 3 | 
| Color | Black | Black | 
| Ideal For | Unisex | Unisex | 
| Material | Thermoplastic | Thermoplastic | 
| Suitable For | Health, Lifestyle | Sports, Fitness | 
| Touch Enabled | Yes | Yes | 
| Water Resistant | Yes | Yes | 
| Dial Shape | Rectangle | Oval | 
| Model Number | - | XMSH05HM | 
| Reading Type | - | Digital | 
| Function | - | Show Time/Date, Alarm Clock, Display / Reject Calls, View Messages, Idle Alert, Phone Unlock, Event Reminders, Phone Locator, Weather Forecast, App Notifications, Smart Unlock | 
| display and battery features | 
| Display Resolution | 120 x 240 RGB | 128 x 80 Pixels | 
| Display Type | AMOLED | OLED | 
| Battery Life (Days) | 20 | 20 | 
| Battery Type | Lithium Ion (Li-ion) | Lithium Ion (Li-ion) | 
| Charge Time (hours) | 2 | - | 
| Battery Capacity (mAh) | 135 | 110 | 
| Backlight Present | - | Yes | 
| performance features | 
| Shock Resistant | Yes | Yes | 
| Water-Resistant Depth (metres) | 50 | 40 | 
| Operating Temperature (Celsius) | - | -10℃~50℃ | 
| connectivity features | 
| Wi-Fi Enabled | No | No | 
| Bluetooth Enabled | Yes | Yes | 
| Bluetooth Version | v5.0 | v4.2 | 
| compatibility | 
| Compatible Devices | Android, iOS Phones | Android phones, iPhone | 
| Compatible Android Version | - | Android 4.4 and above | 
| Compatible iOS Version | - | iOS 9.0 and above | 
| activity tracking function | 
| Calories Burned | Yes | Yes | 
| Distance Covered | Yes | Yes | 
| Heart Rate Monitor | Yes | Yes | 
| Phone Notifications | Yes | Yes | 
| Sleep Tracking | Yes | Yes | 
| Step Counter | Yes | Yes | 
| Alarms | - | Yes | 
| Do Not Disturb Mode | - | Yes | 
| Reminders | - | Yes | 
| workout modes | 
| Treadmill | Yes | Yes | 
| Exercise | Yes | Yes | 
| Outdoor Running | Yes | Yes | 
| Cycling | Yes | Yes | 
| Walking | Yes | Yes | 
| Swimming | Yes | Yes | 
| sensors | 
| Accelerometer | Yes | Yes | 
| Gyroscope | Yes | - | 
| Optical Heart Rate Sensor | Yes | Yes | 
| Pedometer | - | Yes | 
| dimensions | 
| Weight (grams) | 22.1 | - | 
| Width (mm) | 45.72 | - | 
| Height (mm) | 12.7 | - | 
| Depth (mm) | 17.78 | - | 
| Other Dimensions | - | Band Capsule: 17.9 x 46.9 x 12 mm, Strap Length: 247 mm, Adjustable Strap Length: 155 mm to 216 mm | 
                
            
            
         
        
     
    
        
                            
                   
            
  Popular Smart Band Brands