# What the Amazfit (Balance / Active / T-Rex / Helio) knows about you

Made by Zepp Health (Amazfit). 10 findings on record, 10 verified against primary sources. Every line is checked; a maker's claim is labeled as a claim, and we say so when nothing is on record.

## Third-party sharing

Zepp Health's own investor filings warn it may be required to cooperate with Chinese government intelligence operations. The same applies to your body data stored in Zepp's China infrastructure, and typical Amazfit buyers never see this disclosure.

- Posture: Verified
- As of: 2024-01-01
- Source: Zepp Health 20-F filings on SEC EDGAR (https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=ZEPP&type=20-F)

## Other disclosed practice

Amazfit started as a Xiaomi partner, rebranded to Zepp Health in 2021, and quietly dropped the Xiaomi connection from its marketing. If you bought early, your data was moved to Zepp's systems during that rebrand, and current Amazfit materials do not mention it.

- Posture: Verified
- As of: 2021-01-11
- Source: Huami Corporation F-1 Registration Statement (NYSE IPO), documenting Xiaomi relationship (https://www.sec.gov/Archives/edgar/data/1736541/000119312519003820/d643001df1.htm)

## Training data use

Zepp Coach AI sends your body data to an unnamed outside AI company. Zepp does not disclose who that company is, how long they keep your data, or whether they use it to train AI models.

- Posture: Verified
- As of: 2024-01-01
- Source: Zepp Health Privacy Policy (AI vendor not named) (https://www.zepp.com/en-us/privacy-policy/)

## Data retention

Cloud data stays until you delete your Zepp account. On-device data is either overwritten when storage fills or kept until you erase it.

- Posture: Verified
- As of: 2026-06-16
- Source: primary source (https://uk.amazfit.com/pages/eu-data-act)

## Cloud upload

Your health, sensor, and location data syncs to cloud servers in China, the US, and Germany, routed to whichever is closest to you.

- Posture: Verified
- As of: 2026-06-16
- Source: primary source (https://uk.amazfit.com/pages/eu-data-act)

## Data deletion control

You can delete on-device data anytime and request cloud data deletion through the Zepp app or by emailing privacy@zepp.com. Deleting your account may affect how the device works.

- Posture: Verified
- As of: 2026-06-16
- Source: primary source (https://uk.amazfit.com/pages/eu-data-act)

## Data sale

Does not sell any personal information to third parties, including under California privacy law, and does not share your phone number or SMS consent with anyone for marketing.

- Posture: Verified
- As of: 2026-05-18
- Source: primary source (https://us.amazfit.com/pages/privacy-policy)

## On-device processing

Some data like location logs is overwritten automatically on-device, while health metrics stay stored. Certain features work locally without sending data to Zepp servers.

- Posture: Verified
- As of: 2026-06-16
- Source: primary source (https://uk.amazfit.com/pages/eu-data-act)

## Location tracking

GPS location is recorded during workouts, saved to the watch, and synced to Zepp cloud servers. The company also estimates your location from your IP address.

- Posture: Verified
- As of: 2026-06-16
- Source: primary source (https://uk.amazfit.com/pages/eu-data-act)

## Biometric storage

Collects extensive body data including heart rate, blood oxygen, ECG, sleep stages, gait, VO2 Max, body fat, and wrist temperature, all stored encrypted on secure servers.

- Posture: Verified
- As of: 2024-11-21
- Source: primary source (https://upload-cdn.huami.com/tposts/8192)

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