---
title: B2G OS events
slug: Archive/B2G_OS/Events
tags:
  - Archive
  - B2G
  - NeedsTranslation
  - TopicStub
  - events
translation_of: Archive/B2G_OS/Events
---
<p>Archived event pages related to B2G OS.</p>

<dl><dt class="landingPageList"><a href="/en-US/docs/Archive/B2G_OS/Events/connected">connected</a></dt><dd class="landingPageList">The <strong><code>connected</code></strong> event callback is executed when a call has been connected.</dd><dt class="landingPageList"><a href="/en-US/docs/Archive/B2G_OS/Events/connectioninfoupdate">connectioninfoupdate</a></dt><dd class="landingPageList">The <strong>connectionInfoUpdate</strong> handler is executed when information about the signal strength and the link speed have been updated.</dd><dt class="landingPageList"><a href="/en-US/docs/Archive/B2G_OS/Events/contactchange">contactchange</a></dt><dd class="landingPageList">The <strong><code>contactchange</code></strong> event is fired each time a contact is added, updated or removed from the device's contact database.</dd><dt class="landingPageList"><a href="/en-US/docs/Archive/B2G_OS/Events/disabled">disabled</a></dt><dd class="landingPageList">The <strong>disabled</strong> event is raised when WiFi is disabled on the device.</dd><dt class="landingPageList"><a href="/en-US/docs/Archive/B2G_OS/Events/enabled">enabled</a></dt><dd class="landingPageList">The <code>enabled</code> handler is executed when Wifi is enabled on the device.</dd><dt class="landingPageList"><a href="/en-US/docs/Archive/B2G_OS/Events/localized">localized</a></dt><dd class="landingPageList">The <code>localized</code> event is triggered after the <a href="https://github.com/fabi1cazenave/webL10n">webL10n</a> library has finished localizing the document and detecting language.</dd><dt class="landingPageList"><a href="/en-US/docs/Archive/B2G_OS/Events/message">message</a></dt><dd class="landingPageList">The <code>message</code> handler is executed when data is received from a child (i)frame or parent window.</dd></dl>