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Let’s talk what I really like about MI SMART BAND 4.
Here are the 12 purposes why I choose MI SMART BAND 4 over BAND 3.
Hugerbattery, 135 mAH(Band 4) > 110 mAH (Band 3)
Sharper and much brighter display.
New sensors (3-axis accelerometer + 3-axis gyroscope).
Now, We can switch ON and OFF existing alarms quickly from the band(Something I wish I had on my Band 3).
Related to MI Band 3 (All for slightly extra money).Larger AMOLED Display 0.95 in(Band 4) > 0.78 in(Band 3) > 0.42(Band 2).
Weather for current location(changes as you move), indicates area name as well on screen.
20-day battery is a promising figure, will experiment and update the review after eventually. But if you don’t connect it with a phone, or turn off alarms, it must last longer, if you use just as a watch.
Custom wallpapers are the best feature I found, at first sensation, the menus and UI peeped like my old Band 3. But after forming custom wallpaper, the entire band is in the new level now.
Modern AMOLED display is so elegant and honestly bright for outdoor.
Unique music dominates (Volume, Track, Play/pause) functions well, but with a small delay.
50m waterproof almost like Band 3. I have seized my Band 3 under all terrible situations and never observed even fogging. Hope Band 4 also acts ruggedly.
Charging time is less than Band 3, takes slighter then 2 hours.