Last Updated on April 19, 2022 by Jude Simeone
In this post, we compare specs and features of these two head-to-head, the Mi Band 4 vs 3 – what’s the difference? Find out if an upgrade is necessary?
Just after a year the Mi band 3 was released, the Mi band 4 follows up as its successor. It was released in china last week, and as seen, the new Band 4 is quite more stylish and features a more interactive AMOLED display ditching the monochrome OLED of its predecessor, and as well builds on the remarkable impressive battery life of the Band 3.
Contents of this Page
Mi Band 4 vs 3 Specifications Compared
| Mi Band 4 | MI BAND 3 | |
 |  |
|
EDITOR'S RATING | [usrlist "Design:4.2" "Battery:4.7" "Fitness tracking:4.2" "Features: 3.8" "Price:4.5" ] | [usrlist "Design:3.5" "Battery:4.5" "Fitness tracking:4" "Features: 3.6" "Price:4.5" ] |
WHERE TO BUY |  View @ Amazon View @ Gearbest | View @ Amazon View Gearbest |
ABOUT DEVICE |
||
| Device name | Mi Band 4 | Mi Band 3 |
| Device type | Fitness smartband | Fitness smartband |
| Predessesor | MI BAND 3 | Mi band 2 |
| Successor | Mi Band 5 | Mi Band 4 |
| Released date | June, 2019 | May, 2018 |
| Ideal for | Unisex | Unisex |
DISPLAY |
||
| Display type | AMOLED (400nits) | OLED (monochrome) |
| Display size | 0.95 inch | 0.78 inch |
| Display resolution | 240 x 120 pixel | 128 x 80 pixel |
| Pixel density | _ | _ |
| Input type | Touchkey | Touchkey |
| Always-on | Yes | Yes |
| Customizable watch face | Yes | Yes |
BODY |
||
| Shape | Rectangular/curved | Rectangular/curved |
| Dimension | 47 x 21.6 x 10.8 mm | 17.9 x 17.9 x 12 mm |
| Weight | 22.1 grams | 20 grams |
| Casing material | Polycarbonate | Polycarbonate |
| Strap/band material | TPU | TPU |
| Bezel Material | Polycarbonate | Polycarbonate |
| Strap size | 155 - 216mm | 155 - 216mm |
| Interchangeable band | 155 - 216mm | 155 - 216mm |
| Screen protection | 2.5D Tempered glass | 2.5D Tempered glass |
| Water resistant/Protection | Yes, 5ATM | Yes, 5ATM |
| Swim-proof | Recommended | Recommended |
| Color(s) | Black Blue Red Orange Gray | Black Red |
MEMORY | ||
| RAM | 512KB | -- |
| Internal storage | 16MB | -- |
| Memory card slot | No | No |
CONNECTIVITY | ||
| Bluetooth | Bluetooth v5.0 | Bluetooth v4.2 |
| Bluetooth calling | No | No |
| Wi-Fi | No | No |
| NFC | Yes (China) | No |
| GPS | No (Connected GPS) | No |
CELLULAR TECHNOLOGY | ||
| Technology | None | None |
| SIM | None | None |
| Band | No | No |
NOTIFICATIONS | ||
| Email alert | Yes | Yes |
| SMS alert | Yes | Yes |
| Calls alert | Yes | Yes |
| Event reminder | Yes | Yes |
| Weather | Yes | Yes |
| Third-party apps | Yes | Yes |
FITNESS TRACKING | ||
| Sleep apnea | No | No |
| Sleep tracking | Yes | Yes |
| Steps | Yes | Yes |
| Floors climbed | No | No |
| Heart rate monitoring | Yes | Yes |
| Calories | Yes | Yes |
| Distance | Yes | Yes |
| Stress | No | No |
| VO2 Max. | No | No |
| Blood oxygen | No | No |
| Blood pressure | No | No |
| Menstrual cycle tracking | No | No |
| Swim tracking | Yes | Yes |
| Under-water heart rate tracking | No | No |
| Preloaded maps | No | No |
| On-screen workout modes | No | No |
| Triathlon mode | No | No |
| ECG Tracking | No | No |
| Preloaded sport modes | Yes, 6 | Yes |
| Safety tracking | No | No |
MEDIA | ||
| Audio | No | No |
| Music streaming | No | No |
| Bluetooth music | No | No |
| Radio | No | No |
| Loudspeaker | No | No |
| Microphone | No | No |
| Camera | No | No |
SENSORS | ||
| Accelerometer | Yes | Yes |
| Barometer/Altimeter | No | No |
| Heart rate monitor (HRM) | Yes | Yes |
| Compass | No | No |
| Gyroscope | Yes | No |
| Ambient light | No | No |
| Pulse Oximeter | No | No |
| ECG | No | No |
| Thermometer | No | No |
| Other sensors | -- | -- |
PLATFORM | ||
| Operating system (OS) | Proprietary OS | Proprietary OS |
| Chipset | -- | -- |
| CPU | -- | -- |
| GPU | -- | -- |
BATTERY | ||
| Type of battery | Non-removable Li-Polymer battery | Non-removable Li-Polymer battery |
| Battery capacity | 135mAh | 110mAh |
| Battery life | Standby: 3 Weeks+ Mixed usage: 20 days | Standby: 3 Weeks+ Mixed usage: 18 days+ |
| Charging type | 2Pin pogo-pin | Charging cradle |
| Charging time | About 1-2 hours | About 1-2 hours |
| Battery saver mode | No | No |
| Solar power | No | No |
| Rapid charging | No | No |
CLOCK FEATURES | ||
| Time/Date | Yes | Yes |
| Stopwatch | Yes | Yes |
| Alarm | Yes | Yes |
OTHER FUNCTIONS | ||
| Control camera | No | No |
| Music control | Yes | No |
| Find phone | Yes | Yes |
| Text response | No | No |
MISC | ||
| Payment system | Ali Pay(China) | None |
| Compatibility | Android 4.4+ iOS 9.0+ | Android 4.4+ iOS 9.0+ |
| Companion app | Mi Fit App | Mi Fit App |
| Voice command | Xiao AI (China) | No |
BOX CONTENTS | ||
| Mi Band 4 | Mi Band 3 | |
| Straps | Straps | |
| Charger | Charger | |
| Quick start guide | Quick start guide | |
| NOTE: We can't guarantee that all the information on this table are 100% correct. Read full disclaimer. Please, report an error. | ||
| Official Site | Official Site | |
Mi Band 4 vs 3 – The Differences
- Design
- Battery Life
- Activity Tracking
The new Mi Band 4 comes in a stunning stylish design that’s no doubt more stylish than the Band 3. Although, still same capsule shape, the Band 4 has some detailed curves that sets it apart from the Band 3.
With the Band 4 you can see more at a glance on its 0.95-inch display that’s slightly wider than the Band 3, and now features a more interactive AMOLED display in place of the monochromic OLED that powered the Band 3 display.
We don’t know the actual dimensions of the Band 4, but from the physical appearance, it appears to be a bit slimmer than the Band 3.
Beyond the difference in display size and type, the casing and straps materials remain the same.
The Band 3 was remarkable for its impressive battery life that could last about 2 weeks or more. Well, the Band 4 has got a boost in the battery capacity that sees it house 135mAh lithium polymer battery instead of the 110mAh of the Band 3 which the company says will increase the battery life of the Band 4 by 20%.
That’s about 3 days extended battery life that leaves the Band 4 with a more impressive battery life.
While the Mi Band 3 was a quite outstanding fitness tracker featuring a 3-axis accelerometer and a heart rate sensor, the Band 4 features a 6-axis that includes, 3-axis accelerometer and 3-axis gyroscope, and as well the PPG heart rate sensor that makes it a more comprehensive activity tracker.
With the 3-axis gyroscope onboard, the Mi band 4 can now track your cycling and elliptical activities which the Band 3 lacks the ability to.
Which is Better?
Although, we’d thought that with the new features and design, the price of the Mi Band 4 would skyrocket to the top, but fortunately it’s not the case.
Actually the Band 4 is nearly same price as the Band 3, while the band 3 is about $30, the Band 4 is priced about $35 for the standard edition with the NFC edition priced $45.
Beyond the price, the Mi band 4 is clearly a better choice, it has a longer battery life, a more comprehensive activity tracker, and as well as a more decent appearance than the Band 3.
Here is a summary;
| MI BAND 4 | A stylish and more comprehensive activity tracker with a longer battery life. |
| MI BAND 3 | Also a great choice, a smart alternative. |
Our Pick
The Mi Band 4 has a better design while also being a more comprehensive fitness tracker with a slight longer battery life. It’s no doubt a better choice, and our preferred choice.
Hi! I’m Jude, the chief editor at Smartwatchseries.com
I’m a scientist, a 3D artist, and a passionate fitness enthusiast. On here, I and other smartwatch fans work hard to help you find the right smartwatch for you with our guides, reviews, and comparisons.
Our aim is to become better at providing useful content, please lets us know via the contact us form if there is any way we can improve.