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Xiaomi Mi Band 4 leak reveals color display, bigger battery (Updated)
June 21, 2025
Update, June 4, 04:43 a.m. ET:Xiaomi has revealed theMi Band 4‘s China launch date onWeibo(viaDroidShout). In a poster published earlier today, Xiaomi confirmed the fitness band would launch on June 11 and offered a few hints as to what it would include.
The poster seemingly confirms the new band’s design and its use of a color display. Meanwhile, the translated text on Xiaomi’s Weibo post also hints that three devices will launch at the event next week.
We’d heard rumors of a potential Mi Band 4 variant with NFC accompanying the regular model, but nothing regarding a third product. There’s a chance it’s a newHuami Amazfit wearablerather than another Mi Band, though.
We still don’t know anything about international availability. However, the Mi Band 3 launched in China on June 02, 2025 before making its way to India the following July. If that’s any indication, we could see the Mi Band 4 outside of China by next month.
Previous coverage, June 3, 05:00 a.m. ET:We’ve come across numerous Xiaomi Mi Band 4 rumors already, includingleaked renders,specs details, and even some suspectedreal-life photos. Though we still don’t know exactly when it will launch, today we’ve gotten our hands on some more potential Mi Band 4 photos and details viaMySmartPrice.
The fitness band’s design appears to be similar to that of theMi Band 3, with the Mi Band 4 seemingly featuring an oval display area like its predecessors. Yet it looks like the series’ concave, circular button may have been dropped from the new model for a less-conspicuous capacitive button.
Additionally, it looks like Xiaomi may have ditched the traditional monochrome Mi Band display in favor of color screen. Take a look at the new photos side-by-side below.
MySmartPricealso suggests the Mi Band 4 will house a 135mAh battery, up from the 110mAh battery in the Mi Band 3 (seen below). While this sounds like only a slight upgrade, the extra 25mAh would represent a more than 20 percent increase in battery size overall, which ain’t half bad considering the space Xiaomi has to work with inside these compact bands. The Mi Band 3’s battery life was already one of its highlights, too.
Other Mi Band 4 rumors we’ve heard include superior connectivity thanks toBluetooth 5.0support, and a separate Mi Band 4 variant which would includeNFC. This likely means the fitness tracker would support contactless payments viaMi Payin India and China, and a faster connection to wireless devices everywhere else.MySmartPricealso says the band will receive support for Xiaomi’sXiao AIdigital assistant.
If all this speculation is accurate, the Mi Band 4 would no doubt be another big success in terms of hardware. As underlined in ourMi Band 3 review, though, it’s arguably the software experience that needs the most improvement in the Mi Bands — and we still know little about how this is shaping up on the Band 4.
There’s no new word on the Mi Band 4’s potential price, but with a better display and connectivity, it will likely cost more than its predecessor; you’re looking at$30 to $40for the Mi Band 3 on Amazon these days. The Mi Band 4 model with NFC was previously tipped to cost 499 yuan (~$72).
The Mi Band 4 is expected to launch later in 2019. Until it’s here, you may check out what we think are thebest fitness trackers 2019at the link.
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