Firefox OS 2.0 for developers

This page details the developer features newly implemented in Gecko that are specific to Firefox OS 2.0.

Firefox OS 2.0's Gecko component is based on Firefox 31/32.

New product features

This section provides a summary of the new features available in Firefox OS 2.0. For more details on specific platform changes (API additions, etc.), see the Platform additions in detail section.

NFC: This release includes support for device-to-device content sharing support with NFC (Near Field Communication). You can pair your device with another, then swipe to share your contacts, media, or favorite URLs with others.
Telephony: Firefox OS now supports both IPv4 and IPv6 addresses in the network manager.
Find My Device: If you’ve lost your Firefox OS smartphone, Find My Device can help you find it (see the http://find.firefox.com website). You can see it on a map, make it play a sound and have it display a message. You can also remotely lock it or delete your personal info. To get started, create a Firefox Account (Settings > Firefox Accounts on your device) and enable Find My Device (Settings > Find My Device).
Media: You can now create your own ringtones using your own music collection, or songs you download from the Web.
Camera: The Camera app now supports various focus modes: Touch, Continuous Auto and Face tracking.
Productivity: We've done a visual refresh of the Email, Calender, and Clock apps.
Homescreen: Firefox OS 2.0 introduces a simpler vertical-scrolling homescreen with larger icons.
Edge-gesture app switching: Edge gestures are now available for switching between apps (swipe your thumb from the left edge of the screen to the right and vice versa, to switch between multiple open apps.)

New partner features

E.ME integration: E.ME integration provides direct access to web apps while configurable search providers can search the web at the same time.

New DevTools features

The Firefox Developer Tools have had a large number of features added in Firefox versions 31 and 32; these aren't Firefox OS-specific, but you can take advantage of them when debugging your Firefox OS apps through WebIDE. To find out more, read:

Platform additions in detail

Note: Our list here includes features most important to Firefox OS. For an expanded list of general Gecko feature additions (which are generally also present in Firefox OS 2.0), consult the Firefox 31 release notes for developers and Firefox 32 release notes for developers.

Web API

The parameters of the MozMobileNetworkInfo constructor have been made nullable (bug 1026727).
WebRTC: mozGetUserMedia, mozRTCPeerConnection, and DataChannels are supported by default.

New constraints for WebRTC's getUserMedia(), width, height, and framerate, have been added, to limit stream dimensions and frame rate (bug 907352):

{
  mandatory: {
    width: { min: 640 },
    height: { min: 480 }
  },
  optional: [
    { width: 650 },
    { width: { min: 650 }},
    { frameRate: 60 },
    { width: { max: 800 }},
  ]
}

RTSP streaming support is now available (bug 929372).
The Resource Statistics API is implemented (bug 951976).
The Resource Timing API is implemented (bug 822480).
fastSeek API is now available for media elements (bug 778077).
The Network Information API is now exposed to Firefox OS (bug 960426).
The Wifi capabilities of the device can now be returned using WifiManager.getCapabilities() (bug 1002314).
The Navigator.vibrate() method behavior has been adapted to the latest specification: too long vibrations are now truncated (bug 1014581).
The Device Storage API now has mount and unmount capabilities (privileged) (bug 971612).
The Feature Detection API is now available (privileged) (bug 983502).
The MSISDN Verification API has been added (privileged) (bug 988469).
A new CameraControl API is now available (privileged) (bug 909542).
The Data Store API has been made available to Web Workers (certified) (bug 949325).
The Device Storage API now uses the File System API spec (bug 910412).
The deprecated Audio Data API has been removed (bug 927245).

CSS

position:sticky is now supported, and used in Gaia app layout (bug 886646).
flex-grow and flex-shrink can now to transition between zero and non-zero values (bug 996945).

Technology support improvements

Firefox OS 2.0 now supports H.264 video hardware, allowing you to create and playback video encoded using this codec much more efficiently. See Media support on Firefox OS for details.