QuickContact Browser Companion only sends information when the user explicitly chooses to send a phone number to the QuickContact Android app.
The add-on may process the phone number selected by the user, together with limited page context such as the page title, page URL, and selected text or nearby context when available, in order to help the QuickContact Android app review and save the contact correctly.
The add-on does not collect browsing history for unrelated purposes and does not send data automatically without user action.
