---
title: What happens if the Device loses connection?
description: After initial login, OPTOVERA can test offline using available User records. Measurements stay on the Device until a connection and sync return.
---

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# What happens if the Device loses connection?

## Offline results remain on the Device until connectivity and synchronization resume.

If the Device loses connection after it has already been logged in, testing can continue.

The Device can still run OPTOVERA tests while offline. Results are saved locally in the Device memory and synchronized with the OPTOVERA cloud platform when the Device reconnects to Wi-Fi or cellular data.

If the Device shows Pending measurements on the home screen, some results have not yet been uploaded to the cloud platform. To resolve this, connect the Device to Wi-Fi or cellular data and synchronize it manually by pressing UPDATE USERS LIST.

After synchronization, supervisors should confirm that Pending measurements returns to zero.

Temporary loss of connection does not automatically prevent testing, but the Device should be reconnected and synchronized as soon as practical. Regular synchronization helps keep results, USERS LIST, PIN resets, and dashboard information up to date.

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