> For the complete documentation index, see [llms.txt](https://docs.tryterra.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tryterra.co/faq/help-topics/data-api-sdk/provider-coverage-and-per-provider-data-availability/health-connect-glucose-timezone-device-data.md).

# Why is Health Connect glucose missing timezone and device\_data?

For Health Connect glucose, timestamps are sent as the **UTC instant without a timezone suffix**, so parse them as UTC and apply the user's timezone yourself.

Device metadata fields are empty for two reasons:

* The Android SDK does not currently pull manufacturer/model off the Health Connect glucose record.
* `serial`, software/hardware version and activation date are not exposed by Health Connect at all, so they stay `null`.

Other body sample types inherit the device timezone, so this field behaves differently for glucose.